Finding the Fourth Proportional to 1,447.34, 1,997.61 and 1,131.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.34 : 1,997.61 = 1,131.98 : x
2. Step 2: Convert to fraction form
   1,447.34/1,997.61 = 1,131.98/x
3. Step 3: Cross multiply
   1,447.34x = 1,997.61 × 1,131.98
4. Step 4: Simplify right side
   1,447.34x = 2,261,254.57
5. Step 5: Solve for x
   x = 2,261,254.57/1,447.34
6. Step 6: Final answer
   x = 1,562.35