Finding the Fourth Proportional to 2,091.80, 2,870.14 and 1,994.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.80 : 2,870.14 = 1,994.60 : x
2. Step 2: Convert to fraction form
   2,091.80/2,870.14 = 1,994.60/x
3. Step 3: Cross multiply
   2,091.80x = 2,870.14 × 1,994.60
4. Step 4: Simplify right side
   2,091.80x = 5,724,781.24
5. Step 5: Solve for x
   x = 5,724,781.24/2,091.80
6. Step 6: Final answer
   x = 2,736.77