Finding the Fourth Proportional to 1,618.83, 2,421.71 and 1,345.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,618.83 : 2,421.71 = 1,345.47 : x
2. Step 2: Convert to fraction form
   1,618.83/2,421.71 = 1,345.47/x
3. Step 3: Cross multiply
   1,618.83x = 2,421.71 × 1,345.47
4. Step 4: Simplify right side
   1,618.83x = 3,258,331.43
5. Step 5: Solve for x
   x = 3,258,331.43/1,618.83
6. Step 6: Final answer
   x = 2,012.77