Finding the Fourth Proportional to 2,091.34, 2,885.97 and 1,159.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.34 : 2,885.97 = 1,159.90 : x
2. Step 2: Convert to fraction form
   2,091.34/2,885.97 = 1,159.90/x
3. Step 3: Cross multiply
   2,091.34x = 2,885.97 × 1,159.90
4. Step 4: Simplify right side
   2,091.34x = 3,347,436.60
5. Step 5: Solve for x
   x = 3,347,436.60/2,091.34
6. Step 6: Final answer
   x = 1,600.62