Finding the Fourth Proportional to 1,375.65, 2,061.63 and 1,229.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.65 : 2,061.63 = 1,229.22 : x
2. Step 2: Convert to fraction form
   1,375.65/2,061.63 = 1,229.22/x
3. Step 3: Cross multiply
   1,375.65x = 2,061.63 × 1,229.22
4. Step 4: Simplify right side
   1,375.65x = 2,534,196.83
5. Step 5: Solve for x
   x = 2,534,196.83/1,375.65
6. Step 6: Final answer
   x = 1,842.18