Finding the Fourth Proportional to 1,005.99, 1,498.37 and 961.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,005.99 : 1,498.37 = 961.01 : x
2. Step 2: Convert to fraction form
   1,005.99/1,498.37 = 961.01/x
3. Step 3: Cross multiply
   1,005.99x = 1,498.37 × 961.01
4. Step 4: Simplify right side
   1,005.99x = 1,439,958.41
5. Step 5: Solve for x
   x = 1,439,958.41/1,005.99
6. Step 6: Final answer
   x = 1,431.38