Finding the Fourth Proportional to 2,578.19, 3,558.82 and 1,530.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578.19 : 3,558.82 = 1,530.25 : x
2. Step 2: Convert to fraction form
   2,578.19/3,558.82 = 1,530.25/x
3. Step 3: Cross multiply
   2,578.19x = 3,558.82 × 1,530.25
4. Step 4: Simplify right side
   2,578.19x = 5,445,888.13
5. Step 5: Solve for x
   x = 5,445,888.13/2,578.19
6. Step 6: Final answer
   x = 2,112.29