Finding the Fourth Proportional to 2,875.78, 4,310.06 and 1,230.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,875.78 : 4,310.06 = 1,230.39 : x
2. Step 2: Convert to fraction form
   2,875.78/4,310.06 = 1,230.39/x
3. Step 3: Cross multiply
   2,875.78x = 4,310.06 × 1,230.39
4. Step 4: Simplify right side
   2,875.78x = 5,303,054.72
5. Step 5: Solve for x
   x = 5,303,054.72/2,875.78
6. Step 6: Final answer
   x = 1,844.04