Finding the Fourth Proportional to 1,433.15, 1,978.86 and 1,101.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.15 : 1,978.86 = 1,101.05 : x
2. Step 2: Convert to fraction form
   1,433.15/1,978.86 = 1,101.05/x
3. Step 3: Cross multiply
   1,433.15x = 1,978.86 × 1,101.05
4. Step 4: Simplify right side
   1,433.15x = 2,178,813.91
5. Step 5: Solve for x
   x = 2,178,813.91/1,433.15
6. Step 6: Final answer
   x = 1,520.30