Finding the Fourth Proportional to 2,809.18, 4,213.86 and 1,054.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,809.18 : 4,213.86 = 1,054.00 : x
2. Step 2: Convert to fraction form
   2,809.18/4,213.86 = 1,054.00/x
3. Step 3: Cross multiply
   2,809.18x = 4,213.86 × 1,054.00
4. Step 4: Simplify right side
   2,809.18x = 4,441,387.37
5. Step 5: Solve for x
   x = 4,441,387.37/2,809.18
6. Step 6: Final answer
   x = 1,581.03