Finding the Fourth Proportional to 1,111.32, 1,665.72 and 461.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.32 : 1,665.72 = 461.25 : x
2. Step 2: Convert to fraction form
   1,111.32/1,665.72 = 461.25/x
3. Step 3: Cross multiply
   1,111.32x = 1,665.72 × 461.25
4. Step 4: Simplify right side
   1,111.32x = 768,313.35
5. Step 5: Solve for x
   x = 768,313.35/1,111.32
6. Step 6: Final answer
   x = 691.35