Finding the Fourth Proportional to 1,384.27, 1,918.54 and 1,358.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.27 : 1,918.54 = 1,358.35 : x
2. Step 2: Convert to fraction form
   1,384.27/1,918.54 = 1,358.35/x
3. Step 3: Cross multiply
   1,384.27x = 1,918.54 × 1,358.35
4. Step 4: Simplify right side
   1,384.27x = 2,606,038.07
5. Step 5: Solve for x
   x = 2,606,038.07/1,384.27
6. Step 6: Final answer
   x = 1,882.61