Finding the Fourth Proportional to 1,431.52, 2,141.58 and 1,199.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431.52 : 2,141.58 = 1,199.05 : x
2. Step 2: Convert to fraction form
   1,431.52/2,141.58 = 1,199.05/x
3. Step 3: Cross multiply
   1,431.52x = 2,141.58 × 1,199.05
4. Step 4: Simplify right side
   1,431.52x = 2,567,861.50
5. Step 5: Solve for x
   x = 2,567,861.50/1,431.52
6. Step 6: Final answer
   x = 1,793.80