Finding the Fourth Proportional to 2,055.57, 3,085.53 and 1,670.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.57 : 3,085.53 = 1,670.22 : x
2. Step 2: Convert to fraction form
   2,055.57/3,085.53 = 1,670.22/x
3. Step 3: Cross multiply
   2,055.57x = 3,085.53 × 1,670.22
4. Step 4: Simplify right side
   2,055.57x = 5,153,513.92
5. Step 5: Solve for x
   x = 5,153,513.92/2,055.57
6. Step 6: Final answer
   x = 2,507.10