Finding the Fourth Proportional to 2,346.74, 3,238.32 and 1,298.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,346.74 : 3,238.32 = 1,298.78 : x
2. Step 2: Convert to fraction form
   2,346.74/3,238.32 = 1,298.78/x
3. Step 3: Cross multiply
   2,346.74x = 3,238.32 × 1,298.78
4. Step 4: Simplify right side
   2,346.74x = 4,205,865.25
5. Step 5: Solve for x
   x = 4,205,865.25/2,346.74
6. Step 6: Final answer
   x = 1,792.22