Finding the Fourth Proportional to 2,798.39, 4,196.69 and 923.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,798.39 : 4,196.69 = 923.86 : x
2. Step 2: Convert to fraction form
   2,798.39/4,196.69 = 923.86/x
3. Step 3: Cross multiply
   2,798.39x = 4,196.69 × 923.86
4. Step 4: Simplify right side
   2,798.39x = 3,877,158.11
5. Step 5: Solve for x
   x = 3,877,158.11/2,798.39
6. Step 6: Final answer
   x = 1,385.49