Finding the Fourth Proportional to 2,071.48, 3,102.76 and 974.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.48 : 3,102.76 = 974.20 : x
2. Step 2: Convert to fraction form
   2,071.48/3,102.76 = 974.20/x
3. Step 3: Cross multiply
   2,071.48x = 3,102.76 × 974.20
4. Step 4: Simplify right side
   2,071.48x = 3,022,708.79
5. Step 5: Solve for x
   x = 3,022,708.79/2,071.48
6. Step 6: Final answer
   x = 1,459.20