Finding the Fourth Proportional to 1,360.45, 1,877.37 and 770.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.45 : 1,877.37 = 770.98 : x
2. Step 2: Convert to fraction form
   1,360.45/1,877.37 = 770.98/x
3. Step 3: Cross multiply
   1,360.45x = 1,877.37 × 770.98
4. Step 4: Simplify right side
   1,360.45x = 1,447,414.72
5. Step 5: Solve for x
   x = 1,447,414.72/1,360.45
6. Step 6: Final answer
   x = 1,063.92