Finding the Fourth Proportional to 1,328.30, 1,835.61 and 1,065.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,328.30 : 1,835.61 = 1,065.86 : x
2. Step 2: Convert to fraction form
   1,328.30/1,835.61 = 1,065.86/x
3. Step 3: Cross multiply
   1,328.30x = 1,835.61 × 1,065.86
4. Step 4: Simplify right side
   1,328.30x = 1,956,503.27
5. Step 5: Solve for x
   x = 1,956,503.27/1,328.30
6. Step 6: Final answer
   x = 1,472.94