Finding the Fourth Proportional to 2,987.05, 4,457.98 and 2,909.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,987.05 : 4,457.98 = 2,909.29 : x
2. Step 2: Convert to fraction form
   2,987.05/4,457.98 = 2,909.29/x
3. Step 3: Cross multiply
   2,987.05x = 4,457.98 × 2,909.29
4. Step 4: Simplify right side
   2,987.05x = 12,969,534.34
5. Step 5: Solve for x
   x = 12,969,534.34/2,987.05
6. Step 6: Final answer
   x = 4,341.93