Finding the Fourth Proportional to 1,421.98, 1,962.93 and 956.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.98 : 1,962.93 = 956.50 : x
2. Step 2: Convert to fraction form
   1,421.98/1,962.93 = 956.50/x
3. Step 3: Cross multiply
   1,421.98x = 1,962.93 × 956.50
4. Step 4: Simplify right side
   1,421.98x = 1,877,541.22
5. Step 5: Solve for x
   x = 1,877,541.22/1,421.98
6. Step 6: Final answer
   x = 1,320.37