Finding the Fourth Proportional to 2,064.79, 3,091.35 and 1,870.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.79 : 3,091.35 = 1,870.16 : x
2. Step 2: Convert to fraction form
   2,064.79/3,091.35 = 1,870.16/x
3. Step 3: Cross multiply
   2,064.79x = 3,091.35 × 1,870.16
4. Step 4: Simplify right side
   2,064.79x = 5,781,319.12
5. Step 5: Solve for x
   x = 5,781,319.12/2,064.79
6. Step 6: Final answer
   x = 2,799.96