Finding the Fourth Proportional to 3,419.29, 5,123.04 and 2,670.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,419.29 : 5,123.04 = 2,670.31 : x
2. Step 2: Convert to fraction form
   3,419.29/5,123.04 = 2,670.31/x
3. Step 3: Cross multiply
   3,419.29x = 5,123.04 × 2,670.31
4. Step 4: Simplify right side
   3,419.29x = 13,680,104.94
5. Step 5: Solve for x
   x = 13,680,104.94/3,419.29
6. Step 6: Final answer
   x = 4,000.86