Finding the Fourth Proportional to 2,112.72, 2,914 and 1,553

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.72 : 2,914 = 1,553 : x
2. Step 2: Convert to fraction form
   2,112.72/2,914 = 1,553/x
3. Step 3: Cross multiply
   2,112.72x = 2,914 × 1,553
4. Step 4: Simplify right side
   2,112.72x = 4,525,442
5. Step 5: Solve for x
   x = 4,525,442/2,112.72
6. Step 6: Final answer
   x = 2,142.00