Finding the Fourth Proportional to 2,985.30, 4,478.15 and 793.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,985.30 : 4,478.15 = 793.98 : x
2. Step 2: Convert to fraction form
   2,985.30/4,478.15 = 793.98/x
3. Step 3: Cross multiply
   2,985.30x = 4,478.15 × 793.98
4. Step 4: Simplify right side
   2,985.30x = 3,555,563.52
5. Step 5: Solve for x
   x = 3,555,563.52/2,985.30
6. Step 6: Final answer
   x = 1,191.02