Finding the Fourth Proportional to 1,384.24, 1,911.91 and 1,010.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.24 : 1,911.91 = 1,010.62 : x
2. Step 2: Convert to fraction form
   1,384.24/1,911.91 = 1,010.62/x
3. Step 3: Cross multiply
   1,384.24x = 1,911.91 × 1,010.62
4. Step 4: Simplify right side
   1,384.24x = 1,932,209.43
5. Step 5: Solve for x
   x = 1,932,209.43/1,384.24
6. Step 6: Final answer
   x = 1,395.86