Finding the Fourth Proportional to 931,095, 1,284,912.45 and 528,687

Step by Step Solution

1. Step 1: Write the proportion equation
   931,095 : 1,284,912.45 = 528,687 : x
2. Step 2: Convert to fraction form
   931,095/1,284,912.45 = 528,687/x
3. Step 3: Cross multiply
   931,095x = 1,284,912.45 × 528,687
4. Step 4: Simplify right side
   931,095x = 679,316,508,453.15
5. Step 5: Solve for x
   x = 679,316,508,453.15/931,095
6. Step 6: Final answer
   x = 729,588.83