Finding the Fourth Proportional to 1,350.55, 1,863.78 and 761.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.55 : 1,863.78 = 761.09 : x
2. Step 2: Convert to fraction form
   1,350.55/1,863.78 = 761.09/x
3. Step 3: Cross multiply
   1,350.55x = 1,863.78 × 761.09
4. Step 4: Simplify right side
   1,350.55x = 1,418,500.51
5. Step 5: Solve for x
   x = 1,418,500.51/1,350.55
6. Step 6: Final answer
   x = 1,050.32