Finding the Fourth Proportional to 1,664.38, 2,498.29 and 1,226.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,664.38 : 2,498.29 = 1,226.12 : x
2. Step 2: Convert to fraction form
   1,664.38/2,498.29 = 1,226.12/x
3. Step 3: Cross multiply
   1,664.38x = 2,498.29 × 1,226.12
4. Step 4: Simplify right side
   1,664.38x = 3,063,192.46
5. Step 5: Solve for x
   x = 3,063,192.46/1,664.38
6. Step 6: Final answer
   x = 1,840.45