Finding the Fourth Proportional to 2,290.67, 3,158.18 and 2,259.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.67 : 3,158.18 = 2,259.69 : x
2. Step 2: Convert to fraction form
   2,290.67/3,158.18 = 2,259.69/x
3. Step 3: Cross multiply
   2,290.67x = 3,158.18 × 2,259.69
4. Step 4: Simplify right side
   2,290.67x = 7,136,507.76
5. Step 5: Solve for x
   x = 7,136,507.76/2,290.67
6. Step 6: Final answer
   x = 3,115.47