Finding the Fourth Proportional to 1,384.52, 1,906.26 and 1,123.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.52 : 1,906.26 = 1,123.40 : x
2. Step 2: Convert to fraction form
   1,384.52/1,906.26 = 1,123.40/x
3. Step 3: Cross multiply
   1,384.52x = 1,906.26 × 1,123.40
4. Step 4: Simplify right side
   1,384.52x = 2,141,492.48
5. Step 5: Solve for x
   x = 2,141,492.48/1,384.52
6. Step 6: Final answer
   x = 1,546.74