Finding the Fourth Proportional to 1,225.52, 1,690.71 and 759.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225.52 : 1,690.71 = 759.50 : x
2. Step 2: Convert to fraction form
   1,225.52/1,690.71 = 759.50/x
3. Step 3: Cross multiply
   1,225.52x = 1,690.71 × 759.50
4. Step 4: Simplify right side
   1,225.52x = 1,284,094.25
5. Step 5: Solve for x
   x = 1,284,094.25/1,225.52
6. Step 6: Final answer
   x = 1,047.80