Finding the Fourth Proportional to 1,689.96, 2,535.52 and 703.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689.96 : 2,535.52 = 703.31 : x
2. Step 2: Convert to fraction form
   1,689.96/2,535.52 = 703.31/x
3. Step 3: Cross multiply
   1,689.96x = 2,535.52 × 703.31
4. Step 4: Simplify right side
   1,689.96x = 1,783,243.89
5. Step 5: Solve for x
   x = 1,783,243.89/1,689.96
6. Step 6: Final answer
   x = 1,055.20