Finding the Fourth Proportional to 1,156,369.71, 1,595,770.89 and 640,112.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,156,369.71 : 1,595,770.89 = 640,112.69 : x
2. Step 2: Convert to fraction form
   1,156,369.71/1,595,770.89 = 640,112.69/x
3. Step 3: Cross multiply
   1,156,369.71x = 1,595,770.89 × 640,112.69
4. Step 4: Simplify right side
   1,156,369.71x = 1,021,473,189,042.74
5. Step 5: Solve for x
   x = 1,021,473,189,042.74/1,156,369.71
6. Step 6: Final answer
   x = 883,344.82