Finding the Fourth Proportional to 2,581.25, 3,870.30 and 1,192.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.25 : 3,870.30 = 1,192.71 : x
2. Step 2: Convert to fraction form
   2,581.25/3,870.30 = 1,192.71/x
3. Step 3: Cross multiply
   2,581.25x = 3,870.30 × 1,192.71
4. Step 4: Simplify right side
   2,581.25x = 4,616,145.51
5. Step 5: Solve for x
   x = 4,616,145.51/2,581.25
6. Step 6: Final answer
   x = 1,788.34