Finding the Fourth Proportional to 1,354.50, 1,869.39 and 889.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.50 : 1,869.39 = 889.02 : x
2. Step 2: Convert to fraction form
   1,354.50/1,869.39 = 889.02/x
3. Step 3: Cross multiply
   1,354.50x = 1,869.39 × 889.02
4. Step 4: Simplify right side
   1,354.50x = 1,661,925.10
5. Step 5: Solve for x
   x = 1,661,925.10/1,354.50
6. Step 6: Final answer
   x = 1,226.97