Finding the Fourth Proportional to 2,054.57, 2,834.60 and 1,170.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,054.57 : 2,834.60 = 1,170.15 : x
2. Step 2: Convert to fraction form
   2,054.57/2,834.60 = 1,170.15/x
3. Step 3: Cross multiply
   2,054.57x = 2,834.60 × 1,170.15
4. Step 4: Simplify right side
   2,054.57x = 3,316,901.34
5. Step 5: Solve for x
   x = 3,316,901.34/2,054.57
6. Step 6: Final answer
   x = 1,614.40