Finding the Fourth Proportional to 1,139.56, 1,707.42 and 1,044.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.56 : 1,707.42 = 1,044.52 : x
2. Step 2: Convert to fraction form
   1,139.56/1,707.42 = 1,044.52/x
3. Step 3: Cross multiply
   1,139.56x = 1,707.42 × 1,044.52
4. Step 4: Simplify right side
   1,139.56x = 1,783,434.34
5. Step 5: Solve for x
   x = 1,783,434.34/1,139.56
6. Step 6: Final answer
   x = 1,565.02