Finding the Fourth Proportional to 1,798.61, 2,481.94 and 1,012.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,798.61 : 2,481.94 = 1,012.50 : x
2. Step 2: Convert to fraction form
   1,798.61/2,481.94 = 1,012.50/x
3. Step 3: Cross multiply
   1,798.61x = 2,481.94 × 1,012.50
4. Step 4: Simplify right side
   1,798.61x = 2,512,965.52
5. Step 5: Solve for x
   x = 2,512,965.52/1,798.61
6. Step 6: Final answer
   x = 1,397.17