Finding the Fourth Proportional to 1,071.68, 1,607.82 and 341.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.68 : 1,607.82 = 341.31 : x
2. Step 2: Convert to fraction form
   1,071.68/1,607.82 = 341.31/x
3. Step 3: Cross multiply
   1,071.68x = 1,607.82 × 341.31
4. Step 4: Simplify right side
   1,071.68x = 548,763.34
5. Step 5: Solve for x
   x = 548,763.34/1,071.68
6. Step 6: Final answer
   x = 512.06