Finding the Fourth Proportional to 2,187.42, 3,016.86 and 1,856.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.42 : 3,016.86 = 1,856.94 : x
2. Step 2: Convert to fraction form
   2,187.42/3,016.86 = 1,856.94/x
3. Step 3: Cross multiply
   2,187.42x = 3,016.86 × 1,856.94
4. Step 4: Simplify right side
   2,187.42x = 5,602,128.01
5. Step 5: Solve for x
   x = 5,602,128.01/2,187.42
6. Step 6: Final answer
   x = 2,561.07