Finding the Fourth Proportional to 1,384.40, 1,910.70 and 1,052.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.40 : 1,910.70 = 1,052.30 : x
2. Step 2: Convert to fraction form
   1,384.40/1,910.70 = 1,052.30/x
3. Step 3: Cross multiply
   1,384.40x = 1,910.70 × 1,052.30
4. Step 4: Simplify right side
   1,384.40x = 2,010,629.61
5. Step 5: Solve for x
   x = 2,010,629.61/1,384.40
6. Step 6: Final answer
   x = 1,452.35