Finding the Fourth Proportional to 1,125.89, 1,554.56 and 684.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,125.89 : 1,554.56 = 684.39 : x
2. Step 2: Convert to fraction form
   1,125.89/1,554.56 = 684.39/x
3. Step 3: Cross multiply
   1,125.89x = 1,554.56 × 684.39
4. Step 4: Simplify right side
   1,125.89x = 1,063,925.32
5. Step 5: Solve for x
   x = 1,063,925.32/1,125.89
6. Step 6: Final answer
   x = 944.96