Finding the Fourth Proportional to 1,150.04, 1,722.63 and 661.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.04 : 1,722.63 = 661.88 : x
2. Step 2: Convert to fraction form
   1,150.04/1,722.63 = 661.88/x
3. Step 3: Cross multiply
   1,150.04x = 1,722.63 × 661.88
4. Step 4: Simplify right side
   1,150.04x = 1,140,174.34
5. Step 5: Solve for x
   x = 1,140,174.34/1,150.04
6. Step 6: Final answer
   x = 991.42