Finding the Fourth Proportional to 1,360.46, 1,877.32 and 771.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.46 : 1,877.32 = 771.05 : x
2. Step 2: Convert to fraction form
   1,360.46/1,877.32 = 771.05/x
3. Step 3: Cross multiply
   1,360.46x = 1,877.32 × 771.05
4. Step 4: Simplify right side
   1,360.46x = 1,447,507.59
5. Step 5: Solve for x
   x = 1,447,507.59/1,360.46
6. Step 6: Final answer
   x = 1,063.98