Finding the Fourth Proportional to 1,779.32, 2,455.59 and 993.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,779.32 : 2,455.59 = 993.48 : x
2. Step 2: Convert to fraction form
   1,779.32/2,455.59 = 993.48/x
3. Step 3: Cross multiply
   1,779.32x = 2,455.59 × 993.48
4. Step 4: Simplify right side
   1,779.32x = 2,439,579.55
5. Step 5: Solve for x
   x = 2,439,579.55/1,779.32
6. Step 6: Final answer
   x = 1,371.08