Finding the Fourth Proportional to 1,433.50, 1,977.15 and 992.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.50 : 1,977.15 = 992.14 : x
2. Step 2: Convert to fraction form
   1,433.50/1,977.15 = 992.14/x
3. Step 3: Cross multiply
   1,433.50x = 1,977.15 × 992.14
4. Step 4: Simplify right side
   1,433.50x = 1,961,609.60
5. Step 5: Solve for x
   x = 1,961,609.60/1,433.50
6. Step 6: Final answer
   x = 1,368.41