Finding the Fourth Proportional to 1,689.56, 2,521.54 and 1,550.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689.56 : 2,521.54 = 1,550.10 : x
2. Step 2: Convert to fraction form
   1,689.56/2,521.54 = 1,550.10/x
3. Step 3: Cross multiply
   1,689.56x = 2,521.54 × 1,550.10
4. Step 4: Simplify right side
   1,689.56x = 3,908,631.40
5. Step 5: Solve for x
   x = 3,908,631.40/1,689.56
6. Step 6: Final answer
   x = 2,313.41