Finding the Fourth Proportional to 2,177.71, 3,005.98 and 1,338.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,177.71 : 3,005.98 = 1,338.45 : x
2. Step 2: Convert to fraction form
   2,177.71/3,005.98 = 1,338.45/x
3. Step 3: Cross multiply
   2,177.71x = 3,005.98 × 1,338.45
4. Step 4: Simplify right side
   2,177.71x = 4,023,350.58
5. Step 5: Solve for x
   x = 4,023,350.58/2,177.71
6. Step 6: Final answer
   x = 1,847.52