Finding the Fourth Proportional to 1,948.08, 2,921.76 and 1,020.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,948.08 : 2,921.76 = 1,020.72 : x
2. Step 2: Convert to fraction form
   1,948.08/2,921.76 = 1,020.72/x
3. Step 3: Cross multiply
   1,948.08x = 2,921.76 × 1,020.72
4. Step 4: Simplify right side
   1,948.08x = 2,982,298.87
5. Step 5: Solve for x
   x = 2,982,298.87/1,948.08
6. Step 6: Final answer
   x = 1,530.89