Finding the Fourth Proportional to 1,359,240.72, 2,039,081.62 and 448,151.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359,240.72 : 2,039,081.62 = 448,151.10 : x
2. Step 2: Convert to fraction form
   1,359,240.72/2,039,081.62 = 448,151.10/x
3. Step 3: Cross multiply
   1,359,240.72x = 2,039,081.62 × 448,151.10
4. Step 4: Simplify right side
   1,359,240.72x = 913,816,670,992.78
5. Step 5: Solve for x
   x = 913,816,670,992.78/1,359,240.72
6. Step 6: Final answer
   x = 672,299.36