Finding the Fourth Proportional to 1,742.18, 2,404.08 and 956.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,742.18 : 2,404.08 = 956.21 : x
2. Step 2: Convert to fraction form
   1,742.18/2,404.08 = 956.21/x
3. Step 3: Cross multiply
   1,742.18x = 2,404.08 × 956.21
4. Step 4: Simplify right side
   1,742.18x = 2,298,805.34
5. Step 5: Solve for x
   x = 2,298,805.34/1,742.18
6. Step 6: Final answer
   x = 1,319.50