Finding the Fourth Proportional to 1,037.47, 1,431.98 and 612.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,037.47 : 1,431.98 = 612.46 : x
2. Step 2: Convert to fraction form
   1,037.47/1,431.98 = 612.46/x
3. Step 3: Cross multiply
   1,037.47x = 1,431.98 × 612.46
4. Step 4: Simplify right side
   1,037.47x = 877,030.47
5. Step 5: Solve for x
   x = 877,030.47/1,037.47
6. Step 6: Final answer
   x = 845.36