Finding the Fourth Proportional to 1,453.01, 2,005.16 and 789.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,453.01 : 2,005.16 = 789.89 : x
2. Step 2: Convert to fraction form
   1,453.01/2,005.16 = 789.89/x
3. Step 3: Cross multiply
   1,453.01x = 2,005.16 × 789.89
4. Step 4: Simplify right side
   1,453.01x = 1,583,841.86
5. Step 5: Solve for x
   x = 1,583,841.86/1,453.01
6. Step 6: Final answer
   x = 1,090.05