Finding the Fourth Proportional to 2,652.32, 3,978.72 and 803.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,652.32 : 3,978.72 = 803.44 : x
2. Step 2: Convert to fraction form
   2,652.32/3,978.72 = 803.44/x
3. Step 3: Cross multiply
   2,652.32x = 3,978.72 × 803.44
4. Step 4: Simplify right side
   2,652.32x = 3,196,662.80
5. Step 5: Solve for x
   x = 3,196,662.80/2,652.32
6. Step 6: Final answer
   x = 1,205.23