Finding the Fourth Proportional to 1,059.18, 1,461.02 and 661.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.18 : 1,461.02 = 661.05 : x
2. Step 2: Convert to fraction form
   1,059.18/1,461.02 = 661.05/x
3. Step 3: Cross multiply
   1,059.18x = 1,461.02 × 661.05
4. Step 4: Simplify right side
   1,059.18x = 965,807.27
5. Step 5: Solve for x
   x = 965,807.27/1,059.18
6. Step 6: Final answer
   x = 911.84