Finding the Fourth Proportional to 1,898.38, 2,619.57 and 1,112.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,898.38 : 2,619.57 = 1,112.28 : x
2. Step 2: Convert to fraction form
   1,898.38/2,619.57 = 1,112.28/x
3. Step 3: Cross multiply
   1,898.38x = 2,619.57 × 1,112.28
4. Step 4: Simplify right side
   1,898.38x = 2,913,695.32
5. Step 5: Solve for x
   x = 2,913,695.32/1,898.38
6. Step 6: Final answer
   x = 1,534.83