Finding the Fourth Proportional to 1,301.75, 1,951.44 and 521.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,301.75 : 1,951.44 = 521.59 : x
2. Step 2: Convert to fraction form
   1,301.75/1,951.44 = 521.59/x
3. Step 3: Cross multiply
   1,301.75x = 1,951.44 × 521.59
4. Step 4: Simplify right side
   1,301.75x = 1,017,851.59
5. Step 5: Solve for x
   x = 1,017,851.59/1,301.75
6. Step 6: Final answer
   x = 781.91