Finding the Fourth Proportional to 2,299.55, 3,173.16 and 1,291.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,299.55 : 3,173.16 = 1,291.02 : x
2. Step 2: Convert to fraction form
   2,299.55/3,173.16 = 1,291.02/x
3. Step 3: Cross multiply
   2,299.55x = 3,173.16 × 1,291.02
4. Step 4: Simplify right side
   2,299.55x = 4,096,614.50
5. Step 5: Solve for x
   x = 4,096,614.50/2,299.55
6. Step 6: Final answer
   x = 1,781.49