Finding the Fourth Proportional to 1,431.47, 1,975.50 and 801.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431.47 : 1,975.50 = 801.96 : x
2. Step 2: Convert to fraction form
   1,431.47/1,975.50 = 801.96/x
3. Step 3: Cross multiply
   1,431.47x = 1,975.50 × 801.96
4. Step 4: Simplify right side
   1,431.47x = 1,584,271.98
5. Step 5: Solve for x
   x = 1,584,271.98/1,431.47
6. Step 6: Final answer
   x = 1,106.75