Finding the Fourth Proportional to 1,360.04, 1,877.18 and 770.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.04 : 1,877.18 = 770.76 : x
2. Step 2: Convert to fraction form
   1,360.04/1,877.18 = 770.76/x
3. Step 3: Cross multiply
   1,360.04x = 1,877.18 × 770.76
4. Step 4: Simplify right side
   1,360.04x = 1,446,851.40
5. Step 5: Solve for x
   x = 1,446,851.40/1,360.04
6. Step 6: Final answer
   x = 1,063.83