Finding the Fourth Proportional to 1,360.75, 1,877.91 and 771.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.75 : 1,877.91 = 771.34 : x
2. Step 2: Convert to fraction form
   1,360.75/1,877.91 = 771.34/x
3. Step 3: Cross multiply
   1,360.75x = 1,877.91 × 771.34
4. Step 4: Simplify right side
   1,360.75x = 1,448,507.10
5. Step 5: Solve for x
   x = 1,448,507.10/1,360.75
6. Step 6: Final answer
   x = 1,064.49