Finding the Fourth Proportional to 1,623.55, 2,240.50 and 877.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,623.55 : 2,240.50 = 877.51 : x
2. Step 2: Convert to fraction form
   1,623.55/2,240.50 = 877.51/x
3. Step 3: Cross multiply
   1,623.55x = 2,240.50 × 877.51
4. Step 4: Simplify right side
   1,623.55x = 1,966,061.27
5. Step 5: Solve for x
   x = 1,966,061.27/1,623.55
6. Step 6: Final answer
   x = 1,210.96