Finding the Fourth Proportional to 2,070.24, 2,857.32 and 1,186.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.24 : 2,857.32 = 1,186.34 : x
2. Step 2: Convert to fraction form
   2,070.24/2,857.32 = 1,186.34/x
3. Step 3: Cross multiply
   2,070.24x = 2,857.32 × 1,186.34
4. Step 4: Simplify right side
   2,070.24x = 3,389,738.72
5. Step 5: Solve for x
   x = 3,389,738.72/2,070.24
6. Step 6: Final answer
   x = 1,637.37