Finding the Fourth Proportional to 1,382.88, 2,077.56 and 1,275.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.88 : 2,077.56 = 1,275.96 : x
2. Step 2: Convert to fraction form
   1,382.88/2,077.56 = 1,275.96/x
3. Step 3: Cross multiply
   1,382.88x = 2,077.56 × 1,275.96
4. Step 4: Simplify right side
   1,382.88x = 2,650,883.46
5. Step 5: Solve for x
   x = 2,650,883.46/1,382.88
6. Step 6: Final answer
   x = 1,916.93