Finding the Fourth Proportional to 1,637.37, 2,259.57 and 891.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,637.37 : 2,259.57 = 891.33 : x
2. Step 2: Convert to fraction form
   1,637.37/2,259.57 = 891.33/x
3. Step 3: Cross multiply
   1,637.37x = 2,259.57 × 891.33
4. Step 4: Simplify right side
   1,637.37x = 2,014,017.40
5. Step 5: Solve for x
   x = 2,014,017.40/1,637.37
6. Step 6: Final answer
   x = 1,230.03