Finding the Fourth Proportional to 1,637.35, 2,259.50 and 891.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,637.35 : 2,259.50 = 891.29 : x
2. Step 2: Convert to fraction form
   1,637.35/2,259.50 = 891.29/x
3. Step 3: Cross multiply
   1,637.35x = 2,259.50 × 891.29
4. Step 4: Simplify right side
   1,637.35x = 2,013,870.95
5. Step 5: Solve for x
   x = 2,013,870.95/1,637.35
6. Step 6: Final answer
   x = 1,229.96