Finding the Fourth Proportional to 2,726.72, 3,761.76 and 1,899.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,726.72 : 3,761.76 = 1,899.20 : x
2. Step 2: Convert to fraction form
   2,726.72/3,761.76 = 1,899.20/x
3. Step 3: Cross multiply
   2,726.72x = 3,761.76 × 1,899.20
4. Step 4: Simplify right side
   2,726.72x = 7,144,334.59
5. Step 5: Solve for x
   x = 7,144,334.59/2,726.72
6. Step 6: Final answer
   x = 2,620.12