Finding the Fourth Proportional to 2,614.39, 3,920.60 and 1,054.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,614.39 : 3,920.60 = 1,054.00 : x
2. Step 2: Convert to fraction form
   2,614.39/3,920.60 = 1,054.00/x
3. Step 3: Cross multiply
   2,614.39x = 3,920.60 × 1,054.00
4. Step 4: Simplify right side
   2,614.39x = 4,132,297.88
5. Step 5: Solve for x
   x = 4,132,297.88/2,614.39
6. Step 6: Final answer
   x = 1,580.60