Finding the Fourth Proportional to 1,051.20, 1,450.53 and 585.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.20 : 1,450.53 = 585.42 : x
2. Step 2: Convert to fraction form
   1,051.20/1,450.53 = 585.42/x
3. Step 3: Cross multiply
   1,051.20x = 1,450.53 × 585.42
4. Step 4: Simplify right side
   1,051.20x = 849,169.27
5. Step 5: Solve for x
   x = 849,169.27/1,051.20
6. Step 6: Final answer
   x = 807.81