Finding the Fourth Proportional to 2,091.75, 2,886.63 and 1,160.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.75 : 2,886.63 = 1,160.25 : x
2. Step 2: Convert to fraction form
   2,091.75/2,886.63 = 1,160.25/x
3. Step 3: Cross multiply
   2,091.75x = 2,886.63 × 1,160.25
4. Step 4: Simplify right side
   2,091.75x = 3,349,212.46
5. Step 5: Solve for x
   x = 3,349,212.46/2,091.75
6. Step 6: Final answer
   x = 1,601.15