Finding the Fourth Proportional to 2,856.41, 4,281.38 and 1,211.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.41 : 4,281.38 = 1,211.93 : x
2. Step 2: Convert to fraction form
   2,856.41/4,281.38 = 1,211.93/x
3. Step 3: Cross multiply
   2,856.41x = 4,281.38 × 1,211.93
4. Step 4: Simplify right side
   2,856.41x = 5,188,726.80
5. Step 5: Solve for x
   x = 5,188,726.80/2,856.41
6. Step 6: Final answer
   x = 1,816.52