Finding the Fourth Proportional to 1,562.94, 2,156.76 and 864.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.94 : 2,156.76 = 864.32 : x
2. Step 2: Convert to fraction form
   1,562.94/2,156.76 = 864.32/x
3. Step 3: Cross multiply
   1,562.94x = 2,156.76 × 864.32
4. Step 4: Simplify right side
   1,562.94x = 1,864,120.02
5. Step 5: Solve for x
   x = 1,864,120.02/1,562.94
6. Step 6: Final answer
   x = 1,192.70