Finding the Fourth Proportional to 1,051.47, 1,450.80 and 719.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.47 : 1,450.80 = 719.82 : x
2. Step 2: Convert to fraction form
   1,051.47/1,450.80 = 719.82/x
3. Step 3: Cross multiply
   1,051.47x = 1,450.80 × 719.82
4. Step 4: Simplify right side
   1,051.47x = 1,044,314.86
5. Step 5: Solve for x
   x = 1,044,314.86/1,051.47
6. Step 6: Final answer
   x = 993.20