Finding the Fourth Proportional to 3,123.01, 4,686.27 and 1,391.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.01 : 4,686.27 = 1,391.50 : x
2. Step 2: Convert to fraction form
   3,123.01/4,686.27 = 1,391.50/x
3. Step 3: Cross multiply
   3,123.01x = 4,686.27 × 1,391.50
4. Step 4: Simplify right side
   3,123.01x = 6,520,944.71
5. Step 5: Solve for x
   x = 6,520,944.71/3,123.01
6. Step 6: Final answer
   x = 2,088.03