Finding the Fourth Proportional to 2,086.16, 2,877.88 and 1,246.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.16 : 2,877.88 = 1,246.89 : x
2. Step 2: Convert to fraction form
   2,086.16/2,877.88 = 1,246.89/x
3. Step 3: Cross multiply
   2,086.16x = 2,877.88 × 1,246.89
4. Step 4: Simplify right side
   2,086.16x = 3,588,409.81
5. Step 5: Solve for x
   x = 3,588,409.81/2,086.16
6. Step 6: Final answer
   x = 1,720.11