Finding the Fourth Proportional to 2,091.42, 2,885.97 and 1,147.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.42 : 2,885.97 = 1,147.17 : x
2. Step 2: Convert to fraction form
   2,091.42/2,885.97 = 1,147.17/x
3. Step 3: Cross multiply
   2,091.42x = 2,885.97 × 1,147.17
4. Step 4: Simplify right side
   2,091.42x = 3,310,698.20
5. Step 5: Solve for x
   x = 3,310,698.20/2,091.42
6. Step 6: Final answer
   x = 1,582.99