Finding the Fourth Proportional to 1,689.09, 2,530.27 and 1,030.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689.09 : 2,530.27 = 1,030.15 : x
2. Step 2: Convert to fraction form
   1,689.09/2,530.27 = 1,030.15/x
3. Step 3: Cross multiply
   1,689.09x = 2,530.27 × 1,030.15
4. Step 4: Simplify right side
   1,689.09x = 2,606,562.09
5. Step 5: Solve for x
   x = 2,606,562.09/1,689.09
6. Step 6: Final answer
   x = 1,543.18