Finding the Fourth Proportional to 870,411.42, 1,200,859.83 and 568,780.38

Step by Step Solution

1. Step 1: Write the proportion equation
   870,411.42 : 1,200,859.83 = 568,780.38 : x
2. Step 2: Convert to fraction form
   870,411.42/1,200,859.83 = 568,780.38/x
3. Step 3: Cross multiply
   870,411.42x = 1,200,859.83 × 568,780.38
4. Step 4: Simplify right side
   870,411.42x = 683,025,510,434.14
5. Step 5: Solve for x
   x = 683,025,510,434.14/870,411.42
6. Step 6: Final answer
   x = 784,715.70