Finding the Fourth Proportional to 1,779.82, 2,455.86 and 1,636.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,779.82 : 2,455.86 = 1,636.45 : x
2. Step 2: Convert to fraction form
   1,779.82/2,455.86 = 1,636.45/x
3. Step 3: Cross multiply
   1,779.82x = 2,455.86 × 1,636.45
4. Step 4: Simplify right side
   1,779.82x = 4,018,892.10
5. Step 5: Solve for x
   x = 4,018,892.10/1,779.82
6. Step 6: Final answer
   x = 2,258.03