Finding the Fourth Proportional to 1,360.47, 1,877.38 and 771.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.47 : 1,877.38 = 771.06 : x
2. Step 2: Convert to fraction form
   1,360.47/1,877.38 = 771.06/x
3. Step 3: Cross multiply
   1,360.47x = 1,877.38 × 771.06
4. Step 4: Simplify right side
   1,360.47x = 1,447,572.62
5. Step 5: Solve for x
   x = 1,447,572.62/1,360.47
6. Step 6: Final answer
   x = 1,064.02