Finding the Fourth Proportional to 1,494.89, 2,235.78 and 1,331.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,494.89 : 2,235.78 = 1,331.51 : x
2. Step 2: Convert to fraction form
   1,494.89/2,235.78 = 1,331.51/x
3. Step 3: Cross multiply
   1,494.89x = 2,235.78 × 1,331.51
4. Step 4: Simplify right side
   1,494.89x = 2,976,963.43
5. Step 5: Solve for x
   x = 2,976,963.43/1,494.89
6. Step 6: Final answer
   x = 1,991.43