Finding the Fourth Proportional to 2,126.47, 3,190.03 and 1,085.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,126.47 : 3,190.03 = 1,085.91 : x
2. Step 2: Convert to fraction form
   2,126.47/3,190.03 = 1,085.91/x
3. Step 3: Cross multiply
   2,126.47x = 3,190.03 × 1,085.91
4. Step 4: Simplify right side
   2,126.47x = 3,464,085.48
5. Step 5: Solve for x
   x = 3,464,085.48/2,126.47
6. Step 6: Final answer
   x = 1,629.03