Finding the Fourth Proportional to 1,887.53, 2,603.81 and 1,224.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,887.53 : 2,603.81 = 1,224.74 : x
2. Step 2: Convert to fraction form
   1,887.53/2,603.81 = 1,224.74/x
3. Step 3: Cross multiply
   1,887.53x = 2,603.81 × 1,224.74
4. Step 4: Simplify right side
   1,887.53x = 3,188,999.83
5. Step 5: Solve for x
   x = 3,188,999.83/1,887.53
6. Step 6: Final answer
   x = 1,689.51