Finding the Fourth Proportional to 1,562.98, 2,156.98 and 864.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.98 : 2,156.98 = 864.34 : x
2. Step 2: Convert to fraction form
   1,562.98/2,156.98 = 864.34/x
3. Step 3: Cross multiply
   1,562.98x = 2,156.98 × 864.34
4. Step 4: Simplify right side
   1,562.98x = 1,864,364.09
5. Step 5: Solve for x
   x = 1,864,364.09/1,562.98
6. Step 6: Final answer
   x = 1,192.83