Finding the Fourth Proportional to 1,762.21, 2,431.71 and 976.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,762.21 : 2,431.71 = 976.18 : x
2. Step 2: Convert to fraction form
   1,762.21/2,431.71 = 976.18/x
3. Step 3: Cross multiply
   1,762.21x = 2,431.71 × 976.18
4. Step 4: Simplify right side
   1,762.21x = 2,373,786.67
5. Step 5: Solve for x
   x = 2,373,786.67/1,762.21
6. Step 6: Final answer
   x = 1,347.05