Finding the Fourth Proportional to 1,077.32, 1,615.98 and 307.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077.32 : 1,615.98 = 307.82 : x
2. Step 2: Convert to fraction form
   1,077.32/1,615.98 = 307.82/x
3. Step 3: Cross multiply
   1,077.32x = 1,615.98 × 307.82
4. Step 4: Simplify right side
   1,077.32x = 497,421.34
5. Step 5: Solve for x
   x = 497,421.34/1,077.32
6. Step 6: Final answer
   x = 461.72