Finding the Fourth Proportional to 1,435.63, 1,979.34 and 962.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.63 : 1,979.34 = 962.78 : x
2. Step 2: Convert to fraction form
   1,435.63/1,979.34 = 962.78/x
3. Step 3: Cross multiply
   1,435.63x = 1,979.34 × 962.78
4. Step 4: Simplify right side
   1,435.63x = 1,905,654.25
5. Step 5: Solve for x
   x = 1,905,654.25/1,435.63
6. Step 6: Final answer
   x = 1,327.40