Finding the Fourth Proportional to 1,612.37, 2,226.15 and 1,238.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.37 : 2,226.15 = 1,238.69 : x
2. Step 2: Convert to fraction form
   1,612.37/2,226.15 = 1,238.69/x
3. Step 3: Cross multiply
   1,612.37x = 2,226.15 × 1,238.69
4. Step 4: Simplify right side
   1,612.37x = 2,757,498.61
5. Step 5: Solve for x
   x = 2,757,498.61/1,612.37
6. Step 6: Final answer
   x = 1,710.21