Finding the Fourth Proportional to 1,689.20, 2,318.69 and 1,498.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689.20 : 2,318.69 = 1,498.52 : x
2. Step 2: Convert to fraction form
   1,689.20/2,318.69 = 1,498.52/x
3. Step 3: Cross multiply
   1,689.20x = 2,318.69 × 1,498.52
4. Step 4: Simplify right side
   1,689.20x = 3,474,612.88
5. Step 5: Solve for x
   x = 3,474,612.88/1,689.20
6. Step 6: Final answer
   x = 2,056.96