Finding the Fourth Proportional to 1,443.91, 2,164.23 and 713.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.91 : 2,164.23 = 713.98 : x
2. Step 2: Convert to fraction form
   1,443.91/2,164.23 = 713.98/x
3. Step 3: Cross multiply
   1,443.91x = 2,164.23 × 713.98
4. Step 4: Simplify right side
   1,443.91x = 1,545,216.94
5. Step 5: Solve for x
   x = 1,545,216.94/1,443.91
6. Step 6: Final answer
   x = 1,070.16