Finding the Fourth Proportional to 2,215,219.20, 3,057,066.54 and 1,248,296.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215,219.20 : 3,057,066.54 = 1,248,296.28 : x
2. Step 2: Convert to fraction form
   2,215,219.20/3,057,066.54 = 1,248,296.28/x
3. Step 3: Cross multiply
   2,215,219.20x = 3,057,066.54 × 1,248,296.28
4. Step 4: Simplify right side
   2,215,219.20x = 3,816,124,789,594.47
5. Step 5: Solve for x
   x = 3,816,124,789,594.47/2,215,219.20
6. Step 6: Final answer
   x = 1,722,684.96