Finding the Fourth Proportional to 1,887.06, 2,603.28 and 1,223.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,887.06 : 2,603.28 = 1,223.94 : x
2. Step 2: Convert to fraction form
   1,887.06/2,603.28 = 1,223.94/x
3. Step 3: Cross multiply
   1,887.06x = 2,603.28 × 1,223.94
4. Step 4: Simplify right side
   1,887.06x = 3,186,258.52
5. Step 5: Solve for x
   x = 3,186,258.52/1,887.06
6. Step 6: Final answer
   x = 1,688.48