Finding the Fourth Proportional to 3,452.06, 5,178.94 and 986.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,452.06 : 5,178.94 = 986.90 : x
2. Step 2: Convert to fraction form
   3,452.06/5,178.94 = 986.90/x
3. Step 3: Cross multiply
   3,452.06x = 5,178.94 × 986.90
4. Step 4: Simplify right side
   3,452.06x = 5,111,095.89
5. Step 5: Solve for x
   x = 5,111,095.89/3,452.06
6. Step 6: Final answer
   x = 1,480.59