Finding the Fourth Proportional to 1,213.89, 1,822.30 and 954.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,213.89 : 1,822.30 = 954.72 : x
2. Step 2: Convert to fraction form
   1,213.89/1,822.30 = 954.72/x
3. Step 3: Cross multiply
   1,213.89x = 1,822.30 × 954.72
4. Step 4: Simplify right side
   1,213.89x = 1,739,783.87
5. Step 5: Solve for x
   x = 1,739,783.87/1,213.89
6. Step 6: Final answer
   x = 1,433.23