Finding the Fourth Proportional to 1,562.00, 2,155.61 and 863.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.00 : 2,155.61 = 863.51 : x
2. Step 2: Convert to fraction form
   1,562.00/2,155.61 = 863.51/x
3. Step 3: Cross multiply
   1,562.00x = 2,155.61 × 863.51
4. Step 4: Simplify right side
   1,562.00x = 1,861,382.17
5. Step 5: Solve for x
   x = 1,861,382.17/1,562.00
6. Step 6: Final answer
   x = 1,191.67