Finding the Fourth Proportional to 2,519.68, 3,781.12 and 1,058.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,519.68 : 3,781.12 = 1,058.88 : x
2. Step 2: Convert to fraction form
   2,519.68/3,781.12 = 1,058.88/x
3. Step 3: Cross multiply
   2,519.68x = 3,781.12 × 1,058.88
4. Step 4: Simplify right side
   2,519.68x = 4,003,752.35
5. Step 5: Solve for x
   x = 4,003,752.35/2,519.68
6. Step 6: Final answer
   x = 1,588.99