Finding the Fourth Proportional to 1,948.32, 2,921.38 and 792.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,948.32 : 2,921.38 = 792.72 : x
2. Step 2: Convert to fraction form
   1,948.32/2,921.38 = 792.72/x
3. Step 3: Cross multiply
   1,948.32x = 2,921.38 × 792.72
4. Step 4: Simplify right side
   1,948.32x = 2,315,836.35
5. Step 5: Solve for x
   x = 2,315,836.35/1,948.32
6. Step 6: Final answer
   x = 1,188.63