Finding the Fourth Proportional to 2,127.74, 3,190.14 and 1,085.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,127.74 : 3,190.14 = 1,085.72 : x
2. Step 2: Convert to fraction form
   2,127.74/3,190.14 = 1,085.72/x
3. Step 3: Cross multiply
   2,127.74x = 3,190.14 × 1,085.72
4. Step 4: Simplify right side
   2,127.74x = 3,463,598.80
5. Step 5: Solve for x
   x = 3,463,598.80/2,127.74
6. Step 6: Final answer
   x = 1,627.83