Finding the Fourth Proportional to 2,091.92, 2,886.72 and 1,160.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.92 : 2,886.72 = 1,160.42 : x
2. Step 2: Convert to fraction form
   2,091.92/2,886.72 = 1,160.42/x
3. Step 3: Cross multiply
   2,091.92x = 2,886.72 × 1,160.42
4. Step 4: Simplify right side
   2,091.92x = 3,349,807.62
5. Step 5: Solve for x
   x = 3,349,807.62/2,091.92
6. Step 6: Final answer
   x = 1,601.31