Finding the Fourth Proportional to 1,870.60, 2,806.14 and 1,105.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.60 : 2,806.14 = 1,105.96 : x
2. Step 2: Convert to fraction form
   1,870.60/2,806.14 = 1,105.96/x
3. Step 3: Cross multiply
   1,870.60x = 2,806.14 × 1,105.96
4. Step 4: Simplify right side
   1,870.60x = 3,103,478.59
5. Step 5: Solve for x
   x = 3,103,478.59/1,870.60
6. Step 6: Final answer
   x = 1,659.08