Finding the Fourth Proportional to 1,554.81, 2,143.49 and 1,111.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,554.81 : 2,143.49 = 1,111.94 : x
2. Step 2: Convert to fraction form
   1,554.81/2,143.49 = 1,111.94/x
3. Step 3: Cross multiply
   1,554.81x = 2,143.49 × 1,111.94
4. Step 4: Simplify right side
   1,554.81x = 2,383,432.27
5. Step 5: Solve for x
   x = 2,383,432.27/1,554.81
6. Step 6: Final answer
   x = 1,532.94