Finding the Fourth Proportional to 1,360.42, 1,877.37 and 771.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.42 : 1,877.37 = 771.07 : x
2. Step 2: Convert to fraction form
   1,360.42/1,877.37 = 771.07/x
3. Step 3: Cross multiply
   1,360.42x = 1,877.37 × 771.07
4. Step 4: Simplify right side
   1,360.42x = 1,447,583.69
5. Step 5: Solve for x
   x = 1,447,583.69/1,360.42
6. Step 6: Final answer
   x = 1,064.07