Finding the Fourth Proportional to 1,238,868,436.38, 1,709,673,683.82 and 674,389,720.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,868,436.38 : 1,709,673,683.82 = 674,389,720.79 : x
2. Step 2: Convert to fraction form
   1,238,868,436.38/1,709,673,683.82 = 674,389,720.79/x
3. Step 3: Cross multiply
   1,238,868,436.38x = 1,709,673,683.82 × 674,389,720.79
4. Step 4: Simplify right side
   1,238,868,436.38x = 1,152,986,358,264,832,000
5. Step 5: Solve for x
   x = 1,152,986,358,264,832,000/1,238,868,436.38
6. Step 6: Final answer
   x = 930,676,998.79