Finding the Fourth Proportional to 2,298.78, 3,171.80 and 1,303.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298.78 : 3,171.80 = 1,303.83 : x
2. Step 2: Convert to fraction form
   2,298.78/3,171.80 = 1,303.83/x
3. Step 3: Cross multiply
   2,298.78x = 3,171.80 × 1,303.83
4. Step 4: Simplify right side
   2,298.78x = 4,135,487.99
5. Step 5: Solve for x
   x = 4,135,487.99/2,298.78
6. Step 6: Final answer
   x = 1,798.99