Finding the Fourth Proportional to 1,443.49, 1,991.94 and 846.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.49 : 1,991.94 = 846.10 : x
2. Step 2: Convert to fraction form
   1,443.49/1,991.94 = 846.10/x
3. Step 3: Cross multiply
   1,443.49x = 1,991.94 × 846.10
4. Step 4: Simplify right side
   1,443.49x = 1,685,380.43
5. Step 5: Solve for x
   x = 1,685,380.43/1,443.49
6. Step 6: Final answer
   x = 1,167.57