Finding the Fourth Proportional to 1,434.98, 1,980.24 and 845.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.98 : 1,980.24 = 845.53 : x
2. Step 2: Convert to fraction form
   1,434.98/1,980.24 = 845.53/x
3. Step 3: Cross multiply
   1,434.98x = 1,980.24 × 845.53
4. Step 4: Simplify right side
   1,434.98x = 1,674,352.33
5. Step 5: Solve for x
   x = 1,674,352.33/1,434.98
6. Step 6: Final answer
   x = 1,166.81