Finding the Fourth Proportional to 1,898.42, 2,619.83 and 1,112.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,898.42 : 2,619.83 = 1,112.47 : x
2. Step 2: Convert to fraction form
   1,898.42/2,619.83 = 1,112.47/x
3. Step 3: Cross multiply
   1,898.42x = 2,619.83 × 1,112.47
4. Step 4: Simplify right side
   1,898.42x = 2,914,473.44
5. Step 5: Solve for x
   x = 2,914,473.44/1,898.42
6. Step 6: Final answer
   x = 1,535.21