Finding the Fourth Proportional to 1,898.43, 2,619.86 and 1,101.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,898.43 : 2,619.86 = 1,101.92 : x
2. Step 2: Convert to fraction form
   1,898.43/2,619.86 = 1,101.92/x
3. Step 3: Cross multiply
   1,898.43x = 2,619.86 × 1,101.92
4. Step 4: Simplify right side
   1,898.43x = 2,886,857.52
5. Step 5: Solve for x
   x = 2,886,857.52/1,898.43
6. Step 6: Final answer
   x = 1,520.66