Finding the Fourth Proportional to 2,878.71, 4,318.59 and 1,784.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,878.71 : 4,318.59 = 1,784.31 : x
2. Step 2: Convert to fraction form
   2,878.71/4,318.59 = 1,784.31/x
3. Step 3: Cross multiply
   2,878.71x = 4,318.59 × 1,784.31
4. Step 4: Simplify right side
   2,878.71x = 7,705,703.32
5. Step 5: Solve for x
   x = 7,705,703.32/2,878.71
6. Step 6: Final answer
   x = 2,676.79