Finding the Fourth Proportional to 2,388.06, 3,292.04 and 1,677.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.06 : 3,292.04 = 1,677.78 : x
2. Step 2: Convert to fraction form
   2,388.06/3,292.04 = 1,677.78/x
3. Step 3: Cross multiply
   2,388.06x = 3,292.04 × 1,677.78
4. Step 4: Simplify right side
   2,388.06x = 5,523,302.41
5. Step 5: Solve for x
   x = 5,523,302.41/2,388.06
6. Step 6: Final answer
   x = 2,312.88