Finding the Fourth Proportional to 1,618.08, 2,422.76 and 1,123.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,618.08 : 2,422.76 = 1,123.47 : x
2. Step 2: Convert to fraction form
   1,618.08/2,422.76 = 1,123.47/x
3. Step 3: Cross multiply
   1,618.08x = 2,422.76 × 1,123.47
4. Step 4: Simplify right side
   1,618.08x = 2,721,898.88
5. Step 5: Solve for x
   x = 2,721,898.88/1,618.08
6. Step 6: Final answer
   x = 1,682.18