Finding the Fourth Proportional to 962.42, 1,443.82 and 312.98

Step by Step Solution

1. Step 1: Write the proportion equation
   962.42 : 1,443.82 = 312.98 : x
2. Step 2: Convert to fraction form
   962.42/1,443.82 = 312.98/x
3. Step 3: Cross multiply
   962.42x = 1,443.82 × 312.98
4. Step 4: Simplify right side
   962.42x = 451,886.78
5. Step 5: Solve for x
   x = 451,886.78/962.42
6. Step 6: Final answer
   x = 469.53