Finding the Fourth Proportional to 3,722.50, 5,141.37 and 2,478.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,722.50 : 5,141.37 = 2,478.34 : x
2. Step 2: Convert to fraction form
   3,722.50/5,141.37 = 2,478.34/x
3. Step 3: Cross multiply
   3,722.50x = 5,141.37 × 2,478.34
4. Step 4: Simplify right side
   3,722.50x = 12,742,062.93
5. Step 5: Solve for x
   x = 12,742,062.93/3,722.50
6. Step 6: Final answer
   x = 3,422.99