Finding the Fourth Proportional to 746.34, 1,111.74 and 719.61

Step by Step Solution

1. Step 1: Write the proportion equation
   746.34 : 1,111.74 = 719.61 : x
2. Step 2: Convert to fraction form
   746.34/1,111.74 = 719.61/x
3. Step 3: Cross multiply
   746.34x = 1,111.74 × 719.61
4. Step 4: Simplify right side
   746.34x = 800,019.22
5. Step 5: Solve for x
   x = 800,019.22/746.34
6. Step 6: Final answer
   x = 1,071.92