Finding the Fourth Proportional to 1,434.56, 1,980.16 and 844.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.56 : 1,980.16 = 844.88 : x
2. Step 2: Convert to fraction form
   1,434.56/1,980.16 = 844.88/x
3. Step 3: Cross multiply
   1,434.56x = 1,980.16 × 844.88
4. Step 4: Simplify right side
   1,434.56x = 1,672,997.58
5. Step 5: Solve for x
   x = 1,672,997.58/1,434.56
6. Step 6: Final answer
   x = 1,166.21