Finding the Fourth Proportional to 1,360.67, 1,877.76 and 771.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.67 : 1,877.76 = 771.25 : x
2. Step 2: Convert to fraction form
   1,360.67/1,877.76 = 771.25/x
3. Step 3: Cross multiply
   1,360.67x = 1,877.76 × 771.25
4. Step 4: Simplify right side
   1,360.67x = 1,448,213.01
5. Step 5: Solve for x
   x = 1,448,213.01/1,360.67
6. Step 6: Final answer
   x = 1,064.34