Finding the Fourth Proportional to 1,375.12, 1,895.70 and 1,020.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.12 : 1,895.70 = 1,020.52 : x
2. Step 2: Convert to fraction form
   1,375.12/1,895.70 = 1,020.52/x
3. Step 3: Cross multiply
   1,375.12x = 1,895.70 × 1,020.52
4. Step 4: Simplify right side
   1,375.12x = 1,934,599.76
5. Step 5: Solve for x
   x = 1,934,599.76/1,375.12
6. Step 6: Final answer
   x = 1,406.86