Finding the Fourth Proportional to 1,360.51, 1,877.46 and 771.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.51 : 1,877.46 = 771.10 : x
2. Step 2: Convert to fraction form
   1,360.51/1,877.46 = 771.10/x
3. Step 3: Cross multiply
   1,360.51x = 1,877.46 × 771.10
4. Step 4: Simplify right side
   1,360.51x = 1,447,709.41
5. Step 5: Solve for x
   x = 1,447,709.41/1,360.51
6. Step 6: Final answer
   x = 1,064.09