Finding the Fourth Proportional to 1,055.61, 1,456.86 and 761.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.61 : 1,456.86 = 761.06 : x
2. Step 2: Convert to fraction form
   1,055.61/1,456.86 = 761.06/x
3. Step 3: Cross multiply
   1,055.61x = 1,456.86 × 761.06
4. Step 4: Simplify right side
   1,055.61x = 1,108,750.59
5. Step 5: Solve for x
   x = 1,108,750.59/1,055.61
6. Step 6: Final answer
   x = 1,050.34