Finding the Fourth Proportional to 2,911.94, 4,019.86 and 1,864.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,911.94 : 4,019.86 = 1,864.62 : x
2. Step 2: Convert to fraction form
   2,911.94/4,019.86 = 1,864.62/x
3. Step 3: Cross multiply
   2,911.94x = 4,019.86 × 1,864.62
4. Step 4: Simplify right side
   2,911.94x = 7,495,511.35
5. Step 5: Solve for x
   x = 7,495,511.35/2,911.94
6. Step 6: Final answer
   x = 2,574.06