Finding the Fourth Proportional to 3,123.02, 4,315.47 and 2,971.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.02 : 4,315.47 = 2,971.19 : x
2. Step 2: Convert to fraction form
   3,123.02/4,315.47 = 2,971.19/x
3. Step 3: Cross multiply
   3,123.02x = 4,315.47 × 2,971.19
4. Step 4: Simplify right side
   3,123.02x = 12,822,081.31
5. Step 5: Solve for x
   x = 12,822,081.31/3,123.02
6. Step 6: Final answer
   x = 4,105.67