Finding the Fourth Proportional to 1,562.69, 2,156.51 and 864.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.69 : 2,156.51 = 864.06 : x
2. Step 2: Convert to fraction form
   1,562.69/2,156.51 = 864.06/x
3. Step 3: Cross multiply
   1,562.69x = 2,156.51 × 864.06
4. Step 4: Simplify right side
   1,562.69x = 1,863,354.03
5. Step 5: Solve for x
   x = 1,863,354.03/1,562.69
6. Step 6: Final answer
   x = 1,192.40