Finding the Fourth Proportional to 2,056.80, 3,086.37 and 1,237.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056.80 : 3,086.37 = 1,237.08 : x
2. Step 2: Convert to fraction form
   2,056.80/3,086.37 = 1,237.08/x
3. Step 3: Cross multiply
   2,056.80x = 3,086.37 × 1,237.08
4. Step 4: Simplify right side
   2,056.80x = 3,818,086.60
5. Step 5: Solve for x
   x = 3,818,086.60/2,056.80
6. Step 6: Final answer
   x = 1,856.32