Finding the Fourth Proportional to 3,988.01, 5,978.16 and 2,233.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,988.01 : 5,978.16 = 2,233.87 : x
2. Step 2: Convert to fraction form
   3,988.01/5,978.16 = 2,233.87/x
3. Step 3: Cross multiply
   3,988.01x = 5,978.16 × 2,233.87
4. Step 4: Simplify right side
   3,988.01x = 13,354,417.33
5. Step 5: Solve for x
   x = 13,354,417.33/3,988.01
6. Step 6: Final answer
   x = 3,348.64