Finding the Fourth Proportional to 1,106.34, 1,657.30 and 667.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,106.34 : 1,657.30 = 667.35 : x
2. Step 2: Convert to fraction form
   1,106.34/1,657.30 = 667.35/x
3. Step 3: Cross multiply
   1,106.34x = 1,657.30 × 667.35
4. Step 4: Simplify right side
   1,106.34x = 1,105,997.49
5. Step 5: Solve for x
   x = 1,105,997.49/1,106.34
6. Step 6: Final answer
   x = 999.69