Finding the Fourth Proportional to 1,123.74, 1,684.98 and 894.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.74 : 1,684.98 = 894.12 : x
2. Step 2: Convert to fraction form
   1,123.74/1,684.98 = 894.12/x
3. Step 3: Cross multiply
   1,123.74x = 1,684.98 × 894.12
4. Step 4: Simplify right side
   1,123.74x = 1,506,574.32
5. Step 5: Solve for x
   x = 1,506,574.32/1,123.74
6. Step 6: Final answer
   x = 1,340.68