Finding the Fourth Proportional to 510,128.69, 703,983.51 and 292,333.05

Step by Step Solution

1. Step 1: Write the proportion equation
   510,128.69 : 703,983.51 = 292,333.05 : x
2. Step 2: Convert to fraction form
   510,128.69/703,983.51 = 292,333.05/x
3. Step 3: Cross multiply
   510,128.69x = 703,983.51 × 292,333.05
4. Step 4: Simplify right side
   510,128.69x = 205,797,646,628.01
5. Step 5: Solve for x
   x = 205,797,646,628.01/510,128.69
6. Step 6: Final answer
   x = 403,423.00