Finding the Fourth Proportional to 1,243,665.60, 1,855,798.71 and 1,109,624.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,665.60 : 1,855,798.71 = 1,109,624.40 : x
2. Step 2: Convert to fraction form
   1,243,665.60/1,855,798.71 = 1,109,624.40/x
3. Step 3: Cross multiply
   1,243,665.60x = 1,855,798.71 × 1,109,624.40
4. Step 4: Simplify right side
   1,243,665.60x = 2,059,239,530,104.52
5. Step 5: Solve for x
   x = 2,059,239,530,104.52/1,243,665.60
6. Step 6: Final answer
   x = 1,655,782.33