Finding the Fourth Proportional to 2,658.89, 3,669.56 and 1,539.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658.89 : 3,669.56 = 1,539.81 : x
2. Step 2: Convert to fraction form
   2,658.89/3,669.56 = 1,539.81/x
3. Step 3: Cross multiply
   2,658.89x = 3,669.56 × 1,539.81
4. Step 4: Simplify right side
   2,658.89x = 5,650,425.18
5. Step 5: Solve for x
   x = 5,650,425.18/2,658.89
6. Step 6: Final answer
   x = 2,125.11