Finding the Fourth Proportional to 1,435.34, 1,976.60 and 992.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.34 : 1,976.60 = 992.48 : x
2. Step 2: Convert to fraction form
   1,435.34/1,976.60 = 992.48/x
3. Step 3: Cross multiply
   1,435.34x = 1,976.60 × 992.48
4. Step 4: Simplify right side
   1,435.34x = 1,961,728.57
5. Step 5: Solve for x
   x = 1,961,728.57/1,435.34
6. Step 6: Final answer
   x = 1,366.73