Finding the Fourth Proportional to 918,711.62, 1,267,815.39 and 510,810.31

Step by Step Solution

1. Step 1: Write the proportion equation
   918,711.62 : 1,267,815.39 = 510,810.31 : x
2. Step 2: Convert to fraction form
   918,711.62/1,267,815.39 = 510,810.31/x
3. Step 3: Cross multiply
   918,711.62x = 1,267,815.39 × 510,810.31
4. Step 4: Simplify right side
   918,711.62x = 647,613,166,049.59
5. Step 5: Solve for x
   x = 647,613,166,049.59/918,711.62
6. Step 6: Final answer
   x = 704,914.53