Finding the Fourth Proportional to 2,391.57, 3,301.14 and 1,550.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.57 : 3,301.14 = 1,550.79 : x
2. Step 2: Convert to fraction form
   2,391.57/3,301.14 = 1,550.79/x
3. Step 3: Cross multiply
   2,391.57x = 3,301.14 × 1,550.79
4. Step 4: Simplify right side
   2,391.57x = 5,119,374.90
5. Step 5: Solve for x
   x = 5,119,374.90/2,391.57
6. Step 6: Final answer
   x = 2,140.59