Finding the Fourth Proportional to 1,365.30, 1,870.02 and 1,285.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,365.30 : 1,870.02 = 1,285.52 : x
2. Step 2: Convert to fraction form
   1,365.30/1,870.02 = 1,285.52/x
3. Step 3: Cross multiply
   1,365.30x = 1,870.02 × 1,285.52
4. Step 4: Simplify right side
   1,365.30x = 2,403,948.11
5. Step 5: Solve for x
   x = 2,403,948.11/1,365.30
6. Step 6: Final answer
   x = 1,760.75