Finding the Fourth Proportional to 2,557.34, 3,527.67 and 1,611.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,557.34 : 3,527.67 = 1,611.50 : x
2. Step 2: Convert to fraction form
   2,557.34/3,527.67 = 1,611.50/x
3. Step 3: Cross multiply
   2,557.34x = 3,527.67 × 1,611.50
4. Step 4: Simplify right side
   2,557.34x = 5,684,822.57
5. Step 5: Solve for x
   x = 5,684,822.57/2,557.34
6. Step 6: Final answer
   x = 2,222.95