Finding the Fourth Proportional to 2,518.90, 3,779.82 and 1,057.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.90 : 3,779.82 = 1,057.94 : x
2. Step 2: Convert to fraction form
   2,518.90/3,779.82 = 1,057.94/x
3. Step 3: Cross multiply
   2,518.90x = 3,779.82 × 1,057.94
4. Step 4: Simplify right side
   2,518.90x = 3,998,822.77
5. Step 5: Solve for x
   x = 3,998,822.77/2,518.90
6. Step 6: Final answer
   x = 1,587.53