Finding the Fourth Proportional to 1,360.55, 1,877.43 and 771.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.55 : 1,877.43 = 771.08 : x
2. Step 2: Convert to fraction form
   1,360.55/1,877.43 = 771.08/x
3. Step 3: Cross multiply
   1,360.55x = 1,877.43 × 771.08
4. Step 4: Simplify right side
   1,360.55x = 1,447,648.72
5. Step 5: Solve for x
   x = 1,447,648.72/1,360.55
6. Step 6: Final answer
   x = 1,064.02