Finding the Fourth Proportional to 2,287.68, 3,428.52 and 1,054.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.68 : 3,428.52 = 1,054.92 : x
2. Step 2: Convert to fraction form
   2,287.68/3,428.52 = 1,054.92/x
3. Step 3: Cross multiply
   2,287.68x = 3,428.52 × 1,054.92
4. Step 4: Simplify right side
   2,287.68x = 3,616,814.32
5. Step 5: Solve for x
   x = 3,616,814.32/2,287.68
6. Step 6: Final answer
   x = 1,581.00