Finding the Fourth Proportional to 1,554.63, 2,143.56 and 1,111.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,554.63 : 2,143.56 = 1,111.78 : x
2. Step 2: Convert to fraction form
   1,554.63/2,143.56 = 1,111.78/x
3. Step 3: Cross multiply
   1,554.63x = 2,143.56 × 1,111.78
4. Step 4: Simplify right side
   1,554.63x = 2,383,167.14
5. Step 5: Solve for x
   x = 2,383,167.14/1,554.63
6. Step 6: Final answer
   x = 1,532.95