Finding the Fourth Proportional to 1,674.42, 2,309.90 and 1,085.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,674.42 : 2,309.90 = 1,085.14 : x
2. Step 2: Convert to fraction form
   1,674.42/2,309.90 = 1,085.14/x
3. Step 3: Cross multiply
   1,674.42x = 2,309.90 × 1,085.14
4. Step 4: Simplify right side
   1,674.42x = 2,506,564.89
5. Step 5: Solve for x
   x = 2,506,564.89/1,674.42
6. Step 6: Final answer
   x = 1,496.98