Finding the Fourth Proportional to 1,431.34, 1,975.58 and 933.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431.34 : 1,975.58 = 933.10 : x
2. Step 2: Convert to fraction form
   1,431.34/1,975.58 = 933.10/x
3. Step 3: Cross multiply
   1,431.34x = 1,975.58 × 933.10
4. Step 4: Simplify right side
   1,431.34x = 1,843,413.70
5. Step 5: Solve for x
   x = 1,843,413.70/1,431.34
6. Step 6: Final answer
   x = 1,287.89