Finding the Fourth Proportional to 2,253.32, 3,380.03 and 772.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253.32 : 3,380.03 = 772.53 : x
2. Step 2: Convert to fraction form
   2,253.32/3,380.03 = 772.53/x
3. Step 3: Cross multiply
   2,253.32x = 3,380.03 × 772.53
4. Step 4: Simplify right side
   2,253.32x = 2,611,168.72
5. Step 5: Solve for x
   x = 2,611,168.72/2,253.32
6. Step 6: Final answer
   x = 1,158.81