Finding the Fourth Proportional to 1,847.91, 2,549.30 and 1,217.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,847.91 : 2,549.30 = 1,217.63 : x
2. Step 2: Convert to fraction form
   1,847.91/2,549.30 = 1,217.63/x
3. Step 3: Cross multiply
   1,847.91x = 2,549.30 × 1,217.63
4. Step 4: Simplify right side
   1,847.91x = 3,104,085.32
5. Step 5: Solve for x
   x = 3,104,085.32/1,847.91
6. Step 6: Final answer
   x = 1,679.78