Finding the Fourth Proportional to 1,123.57, 1,682.16 and 892.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123.57 : 1,682.16 = 892.79 : x
2. Step 2: Convert to fraction form
   1,123.57/1,682.16 = 892.79/x
3. Step 3: Cross multiply
   1,123.57x = 1,682.16 × 892.79
4. Step 4: Simplify right side
   1,123.57x = 1,501,810.18
5. Step 5: Solve for x
   x = 1,501,810.18/1,123.57
6. Step 6: Final answer
   x = 1,336.64