Finding the Fourth Proportional to 1,453.13, 2,005.32 and 789.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,453.13 : 2,005.32 = 789.98 : x
2. Step 2: Convert to fraction form
   1,453.13/2,005.32 = 789.98/x
3. Step 3: Cross multiply
   1,453.13x = 2,005.32 × 789.98
4. Step 4: Simplify right side
   1,453.13x = 1,584,162.69
5. Step 5: Solve for x
   x = 1,584,162.69/1,453.13
6. Step 6: Final answer
   x = 1,090.17