Finding the Fourth Proportional to 1,490,081.55, 2,056,356.48 and 1,055,276.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490,081.55 : 2,056,356.48 = 1,055,276.79 : x
2. Step 2: Convert to fraction form
   1,490,081.55/2,056,356.48 = 1,055,276.79/x
3. Step 3: Cross multiply
   1,490,081.55x = 2,056,356.48 × 1,055,276.79
4. Step 4: Simplify right side
   1,490,081.55x = 2,170,025,255,028.32
5. Step 5: Solve for x
   x = 2,170,025,255,028.32/1,490,081.55
6. Step 6: Final answer
   x = 1,456,313.09