Finding the Fourth Proportional to 2,372.57, 3,274.04 and 1,377.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,372.57 : 3,274.04 = 1,377.78 : x
2. Step 2: Convert to fraction form
   2,372.57/3,274.04 = 1,377.78/x
3. Step 3: Cross multiply
   2,372.57x = 3,274.04 × 1,377.78
4. Step 4: Simplify right side
   2,372.57x = 4,510,899.94
5. Step 5: Solve for x
   x = 4,510,899.94/2,372.57
6. Step 6: Final answer
   x = 1,901.28