Finding the Fourth Proportional to 3,438.72, 5,158.17 and 973.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,438.72 : 5,158.17 = 973.80 : x
2. Step 2: Convert to fraction form
   3,438.72/5,158.17 = 973.80/x
3. Step 3: Cross multiply
   3,438.72x = 5,158.17 × 973.80
4. Step 4: Simplify right side
   3,438.72x = 5,023,025.95
5. Step 5: Solve for x
   x = 5,023,025.95/3,438.72
6. Step 6: Final answer
   x = 1,460.73