Finding the Fourth Proportional to 1,915,145.55, 2,642,899.86 and 1,055,720.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915,145.55 : 2,642,899.86 = 1,055,720.16 : x
2. Step 2: Convert to fraction form
   1,915,145.55/2,642,899.86 = 1,055,720.16/x
3. Step 3: Cross multiply
   1,915,145.55x = 2,642,899.86 × 1,055,720.16
4. Step 4: Simplify right side
   1,915,145.55x = 2,790,162,663,063.18
5. Step 5: Solve for x
   x = 2,790,162,663,063.18/1,915,145.55
6. Step 6: Final answer
   x = 1,456,893.27