Finding the Fourth Proportional to 2,091.72, 2,886.30 and 1,160.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.72 : 2,886.30 = 1,160.22 : x
2. Step 2: Convert to fraction form
   2,091.72/2,886.30 = 1,160.22/x
3. Step 3: Cross multiply
   2,091.72x = 2,886.30 × 1,160.22
4. Step 4: Simplify right side
   2,091.72x = 3,348,742.99
5. Step 5: Solve for x
   x = 3,348,742.99/2,091.72
6. Step 6: Final answer
   x = 1,600.95