Finding the Fourth Proportional to 2,791.31, 4,180.89 and 1,326.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,791.31 : 4,180.89 = 1,326.02 : x
2. Step 2: Convert to fraction form
   2,791.31/4,180.89 = 1,326.02/x
3. Step 3: Cross multiply
   2,791.31x = 4,180.89 × 1,326.02
4. Step 4: Simplify right side
   2,791.31x = 5,543,943.76
5. Step 5: Solve for x
   x = 5,543,943.76/2,791.31
6. Step 6: Final answer
   x = 1,986.14