Finding the Fourth Proportional to 2,385.56, 3,291.45 and 1,377.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.56 : 3,291.45 = 1,377.02 : x
2. Step 2: Convert to fraction form
   2,385.56/3,291.45 = 1,377.02/x
3. Step 3: Cross multiply
   2,385.56x = 3,291.45 × 1,377.02
4. Step 4: Simplify right side
   2,385.56x = 4,532,392.48
5. Step 5: Solve for x
   x = 4,532,392.48/2,385.56
6. Step 6: Final answer
   x = 1,899.93