Finding the Fourth Proportional to 2,789.30, 4,184.10 and 1,230.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.30 : 4,184.10 = 1,230.03 : x
2. Step 2: Convert to fraction form
   2,789.30/4,184.10 = 1,230.03/x
3. Step 3: Cross multiply
   2,789.30x = 4,184.10 × 1,230.03
4. Step 4: Simplify right side
   2,789.30x = 5,146,568.52
5. Step 5: Solve for x
   x = 5,146,568.52/2,789.30
6. Step 6: Final answer
   x = 1,845.11