Finding the Fourth Proportional to 1,351.08, 1,864.46 and 761.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,351.08 : 1,864.46 = 761.60 : x
2. Step 2: Convert to fraction form
   1,351.08/1,864.46 = 761.60/x
3. Step 3: Cross multiply
   1,351.08x = 1,864.46 × 761.60
4. Step 4: Simplify right side
   1,351.08x = 1,419,973.59
5. Step 5: Solve for x
   x = 1,419,973.59/1,351.08
6. Step 6: Final answer
   x = 1,050.99