Finding the Fourth Proportional to 1,779.66, 2,456.06 and 993.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,779.66 : 2,456.06 = 993.74 : x
2. Step 2: Convert to fraction form
   1,779.66/2,456.06 = 993.74/x
3. Step 3: Cross multiply
   1,779.66x = 2,456.06 × 993.74
4. Step 4: Simplify right side
   1,779.66x = 2,440,667.82
5. Step 5: Solve for x
   x = 2,440,667.82/1,779.66
6. Step 6: Final answer
   x = 1,371.42