Finding the Fourth Proportional to 2,897.80, 4,347.78 and 1,338.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,897.80 : 4,347.78 = 1,338.56 : x
2. Step 2: Convert to fraction form
   2,897.80/4,347.78 = 1,338.56/x
3. Step 3: Cross multiply
   2,897.80x = 4,347.78 × 1,338.56
4. Step 4: Simplify right side
   2,897.80x = 5,819,764.40
5. Step 5: Solve for x
   x = 5,819,764.40/2,897.80
6. Step 6: Final answer
   x = 2,008.34