Finding the Fourth Proportional to 1,695.06, 2,338.74 and 1,223.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,695.06 : 2,338.74 = 1,223.10 : x
2. Step 2: Convert to fraction form
   1,695.06/2,338.74 = 1,223.10/x
3. Step 3: Cross multiply
   1,695.06x = 2,338.74 × 1,223.10
4. Step 4: Simplify right side
   1,695.06x = 2,860,512.89
5. Step 5: Solve for x
   x = 2,860,512.89/1,695.06
6. Step 6: Final answer
   x = 1,687.56