Finding the Fourth Proportional to 1,623.77, 2,238.53 and 1,091.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,623.77 : 2,238.53 = 1,091.72 : x
2. Step 2: Convert to fraction form
   1,623.77/2,238.53 = 1,091.72/x
3. Step 3: Cross multiply
   1,623.77x = 2,238.53 × 1,091.72
4. Step 4: Simplify right side
   1,623.77x = 2,443,831.32
5. Step 5: Solve for x
   x = 2,443,831.32/1,623.77
6. Step 6: Final answer
   x = 1,505.04