Finding the Fourth Proportional to 1,578.25, 2,364.27 and 1,488.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578.25 : 2,364.27 = 1,488.34 : x
2. Step 2: Convert to fraction form
   1,578.25/2,364.27 = 1,488.34/x
3. Step 3: Cross multiply
   1,578.25x = 2,364.27 × 1,488.34
4. Step 4: Simplify right side
   1,578.25x = 3,518,837.61
5. Step 5: Solve for x
   x = 3,518,837.61/1,578.25
6. Step 6: Final answer
   x = 2,229.58