Finding the Fourth Proportional to 1,693.52, 2,335.46 and 1,224.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,693.52 : 2,335.46 = 1,224.53 : x
2. Step 2: Convert to fraction form
   1,693.52/2,335.46 = 1,224.53/x
3. Step 3: Cross multiply
   1,693.52x = 2,335.46 × 1,224.53
4. Step 4: Simplify right side
   1,693.52x = 2,859,840.83
5. Step 5: Solve for x
   x = 2,859,840.83/1,693.52
6. Step 6: Final answer
   x = 1,688.70