Finding the Fourth Proportional to 2,877.81, 3,971.78 and 1,683.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,877.81 : 3,971.78 = 1,683.15 : x
2. Step 2: Convert to fraction form
   2,877.81/3,971.78 = 1,683.15/x
3. Step 3: Cross multiply
   2,877.81x = 3,971.78 × 1,683.15
4. Step 4: Simplify right side
   2,877.81x = 6,685,093.09
5. Step 5: Solve for x
   x = 6,685,093.09/2,877.81
6. Step 6: Final answer
   x = 2,322.98