Finding the Fourth Proportional to 2,101.60, 2,900.22 and 1,170.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.60 : 2,900.22 = 1,170.10 : x
2. Step 2: Convert to fraction form
   2,101.60/2,900.22 = 1,170.10/x
3. Step 3: Cross multiply
   2,101.60x = 2,900.22 × 1,170.10
4. Step 4: Simplify right side
   2,101.60x = 3,393,547.42
5. Step 5: Solve for x
   x = 3,393,547.42/2,101.60
6. Step 6: Final answer
   x = 1,614.74