Finding the Fourth Proportional to 1,142.04, 1,576.65 and 722.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.04 : 1,576.65 = 722.46 : x
2. Step 2: Convert to fraction form
   1,142.04/1,576.65 = 722.46/x
3. Step 3: Cross multiply
   1,142.04x = 1,576.65 × 722.46
4. Step 4: Simplify right side
   1,142.04x = 1,139,066.56
5. Step 5: Solve for x
   x = 1,139,066.56/1,142.04
6. Step 6: Final answer
   x = 997.40