Finding the Fourth Proportional to 1,689.55, 2,527.63 and 1,585.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689.55 : 2,527.63 = 1,585.87 : x
2. Step 2: Convert to fraction form
   1,689.55/2,527.63 = 1,585.87/x
3. Step 3: Cross multiply
   1,689.55x = 2,527.63 × 1,585.87
4. Step 4: Simplify right side
   1,689.55x = 4,008,492.59
5. Step 5: Solve for x
   x = 4,008,492.59/1,689.55
6. Step 6: Final answer
   x = 2,372.52