Finding the Fourth Proportional to 1,010,499.12, 1,514,479.32 and 505,200.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,010,499.12 : 1,514,479.32 = 505,200.78 : x
2. Step 2: Convert to fraction form
   1,010,499.12/1,514,479.32 = 505,200.78/x
3. Step 3: Cross multiply
   1,010,499.12x = 1,514,479.32 × 505,200.78
4. Step 4: Simplify right side
   1,010,499.12x = 765,116,133,757.87
5. Step 5: Solve for x
   x = 765,116,133,757.87/1,010,499.12
6. Step 6: Final answer
   x = 757,166.55