Finding the Fourth Proportional to 2,658.41, 3,985.86 and 1,488.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658.41 : 3,985.86 = 1,488.53 : x
2. Step 2: Convert to fraction form
   2,658.41/3,985.86 = 1,488.53/x
3. Step 3: Cross multiply
   2,658.41x = 3,985.86 × 1,488.53
4. Step 4: Simplify right side
   2,658.41x = 5,933,072.19
5. Step 5: Solve for x
   x = 5,933,072.19/2,658.41
6. Step 6: Final answer
   x = 2,231.81