Finding the Fourth Proportional to 1,661.84, 2,293.29 and 1,072.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661.84 : 2,293.29 = 1,072.37 : x
2. Step 2: Convert to fraction form
   1,661.84/2,293.29 = 1,072.37/x
3. Step 3: Cross multiply
   1,661.84x = 2,293.29 × 1,072.37
4. Step 4: Simplify right side
   1,661.84x = 2,459,255.40
5. Step 5: Solve for x
   x = 2,459,255.40/1,661.84
6. Step 6: Final answer
   x = 1,479.84