Finding the Fourth Proportional to 2,146.69, 3,216.43 and 1,488.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.69 : 3,216.43 = 1,488.79 : x
2. Step 2: Convert to fraction form
   2,146.69/3,216.43 = 1,488.79/x
3. Step 3: Cross multiply
   2,146.69x = 3,216.43 × 1,488.79
4. Step 4: Simplify right side
   2,146.69x = 4,788,588.82
5. Step 5: Solve for x
   x = 4,788,588.82/2,146.69
6. Step 6: Final answer
   x = 2,230.68