Finding the Fourth Proportional to 1,139.46, 1,572.93 and 741.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.46 : 1,572.93 = 741.69 : x
2. Step 2: Convert to fraction form
   1,139.46/1,572.93 = 741.69/x
3. Step 3: Cross multiply
   1,139.46x = 1,572.93 × 741.69
4. Step 4: Simplify right side
   1,139.46x = 1,166,626.45
5. Step 5: Solve for x
   x = 1,166,626.45/1,139.46
6. Step 6: Final answer
   x = 1,023.84