Finding the Fourth Proportional to 1,140.06, 1,573.05 and 719.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140.06 : 1,573.05 = 719.67 : x
2. Step 2: Convert to fraction form
   1,140.06/1,573.05 = 719.67/x
3. Step 3: Cross multiply
   1,140.06x = 1,573.05 × 719.67
4. Step 4: Simplify right side
   1,140.06x = 1,132,076.89
5. Step 5: Solve for x
   x = 1,132,076.89/1,140.06
6. Step 6: Final answer
   x = 993.00