Finding the Fourth Proportional to 916,727.69, 1,265,066.18 and 508,834.42

Step by Step Solution

1. Step 1: Write the proportion equation
   916,727.69 : 1,265,066.18 = 508,834.42 : x
2. Step 2: Convert to fraction form
   916,727.69/1,265,066.18 = 508,834.42/x
3. Step 3: Cross multiply
   916,727.69x = 1,265,066.18 × 508,834.42
4. Step 4: Simplify right side
   916,727.69x = 643,709,209,636.59
5. Step 5: Solve for x
   x = 643,709,209,636.59/916,727.69
6. Step 6: Final answer
   x = 702,181.49