Finding the Fourth Proportional to 2,520.81, 3,779.46 and 1,058.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.81 : 3,779.46 = 1,058.76 : x
2. Step 2: Convert to fraction form
   2,520.81/3,779.46 = 1,058.76/x
3. Step 3: Cross multiply
   2,520.81x = 3,779.46 × 1,058.76
4. Step 4: Simplify right side
   2,520.81x = 4,001,541.07
5. Step 5: Solve for x
   x = 4,001,541.07/2,520.81
6. Step 6: Final answer
   x = 1,587.40