Finding the Fourth Proportional to 1,076.84, 1,615.50 and 307.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.84 : 1,615.50 = 307.34 : x
2. Step 2: Convert to fraction form
   1,076.84/1,615.50 = 307.34/x
3. Step 3: Cross multiply
   1,076.84x = 1,615.50 × 307.34
4. Step 4: Simplify right side
   1,076.84x = 496,499.69
5. Step 5: Solve for x
   x = 496,499.69/1,076.84
6. Step 6: Final answer
   x = 461.07