Finding the Fourth Proportional to 1,350.88, 1,864.20 and 761.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.88 : 1,864.20 = 761.60 : x
2. Step 2: Convert to fraction form
   1,350.88/1,864.20 = 761.60/x
3. Step 3: Cross multiply
   1,350.88x = 1,864.20 × 761.60
4. Step 4: Simplify right side
   1,350.88x = 1,419,774.72
5. Step 5: Solve for x
   x = 1,419,774.72/1,350.88
6. Step 6: Final answer
   x = 1,051.00