Finding the Fourth Proportional to 1,779.72, 2,654.19 and 1,521.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,779.72 : 2,654.19 = 1,521.36 : x
2. Step 2: Convert to fraction form
   1,779.72/2,654.19 = 1,521.36/x
3. Step 3: Cross multiply
   1,779.72x = 2,654.19 × 1,521.36
4. Step 4: Simplify right side
   1,779.72x = 4,037,978.50
5. Step 5: Solve for x
   x = 4,037,978.50/1,779.72
6. Step 6: Final answer
   x = 2,268.88