Finding the Fourth Proportional to 1,582.86, 2,372.23 and 851.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,582.86 : 2,372.23 = 851.58 : x
2. Step 2: Convert to fraction form
   1,582.86/2,372.23 = 851.58/x
3. Step 3: Cross multiply
   1,582.86x = 2,372.23 × 851.58
4. Step 4: Simplify right side
   1,582.86x = 2,020,144.69
5. Step 5: Solve for x
   x = 2,020,144.69/1,582.86
6. Step 6: Final answer
   x = 1,276.26