Finding the Fourth Proportional to 1,367.89, 1,888.11 and 1,089.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.89 : 1,888.11 = 1,089.35 : x
2. Step 2: Convert to fraction form
   1,367.89/1,888.11 = 1,089.35/x
3. Step 3: Cross multiply
   1,367.89x = 1,888.11 × 1,089.35
4. Step 4: Simplify right side
   1,367.89x = 2,056,810.27
5. Step 5: Solve for x
   x = 2,056,810.27/1,367.89
6. Step 6: Final answer
   x = 1,503.64