Finding the Fourth Proportional to 1,555.57, 2,144.52 and 1,112.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,555.57 : 2,144.52 = 1,112.68 : x
2. Step 2: Convert to fraction form
   1,555.57/2,144.52 = 1,112.68/x
3. Step 3: Cross multiply
   1,555.57x = 2,144.52 × 1,112.68
4. Step 4: Simplify right side
   1,555.57x = 2,386,164.51
5. Step 5: Solve for x
   x = 2,386,164.51/1,555.57
6. Step 6: Final answer
   x = 1,533.95