Finding the Fourth Proportional to 2,898.02, 4,345.40 and 1,338.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,898.02 : 4,345.40 = 1,338.78 : x
2. Step 2: Convert to fraction form
   2,898.02/4,345.40 = 1,338.78/x
3. Step 3: Cross multiply
   2,898.02x = 4,345.40 × 1,338.78
4. Step 4: Simplify right side
   2,898.02x = 5,817,534.61
5. Step 5: Solve for x
   x = 5,817,534.61/2,898.02
6. Step 6: Final answer
   x = 2,007.42