Finding the Fourth Proportional to 2,601.64, 3,591.30 and 1,553.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.64 : 3,591.30 = 1,553.50 : x
2. Step 2: Convert to fraction form
   2,601.64/3,591.30 = 1,553.50/x
3. Step 3: Cross multiply
   2,601.64x = 3,591.30 × 1,553.50
4. Step 4: Simplify right side
   2,601.64x = 5,579,084.55
5. Step 5: Solve for x
   x = 5,579,084.55/2,601.64
6. Step 6: Final answer
   x = 2,144.45