Finding the Fourth Proportional to 2,665.59, 3,998.89 and 1,204.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.59 : 3,998.89 = 1,204.74 : x
2. Step 2: Convert to fraction form
   2,665.59/3,998.89 = 1,204.74/x
3. Step 3: Cross multiply
   2,665.59x = 3,998.89 × 1,204.74
4. Step 4: Simplify right side
   2,665.59x = 4,817,624.24
5. Step 5: Solve for x
   x = 4,817,624.24/2,665.59
6. Step 6: Final answer
   x = 1,807.34