Finding the Fourth Proportional to 1,216.83, 1,678.55 and 844.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216.83 : 1,678.55 = 844.03 : x
2. Step 2: Convert to fraction form
   1,216.83/1,678.55 = 844.03/x
3. Step 3: Cross multiply
   1,216.83x = 1,678.55 × 844.03
4. Step 4: Simplify right side
   1,216.83x = 1,416,746.56
5. Step 5: Solve for x
   x = 1,416,746.56/1,216.83
6. Step 6: Final answer
   x = 1,164.29