Finding the Fourth Proportional to 2,978.95, 4,111.05 and 1,799.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.95 : 4,111.05 = 1,799.79 : x
2. Step 2: Convert to fraction form
   2,978.95/4,111.05 = 1,799.79/x
3. Step 3: Cross multiply
   2,978.95x = 4,111.05 × 1,799.79
4. Step 4: Simplify right side
   2,978.95x = 7,399,006.12
5. Step 5: Solve for x
   x = 7,399,006.12/2,978.95
6. Step 6: Final answer
   x = 2,483.77