Finding the Fourth Proportional to 1,360.88, 1,877.96 and 771.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.88 : 1,877.96 = 771.38 : x
2. Step 2: Convert to fraction form
   1,360.88/1,877.96 = 771.38/x
3. Step 3: Cross multiply
   1,360.88x = 1,877.96 × 771.38
4. Step 4: Simplify right side
   1,360.88x = 1,448,620.78
5. Step 5: Solve for x
   x = 1,448,620.78/1,360.88
6. Step 6: Final answer
   x = 1,064.47