Finding the Fourth Proportional to 1,779.63, 2,667.59 and 998.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,779.63 : 2,667.59 = 998.49 : x
2. Step 2: Convert to fraction form
   1,779.63/2,667.59 = 998.49/x
3. Step 3: Cross multiply
   1,779.63x = 2,667.59 × 998.49
4. Step 4: Simplify right side
   1,779.63x = 2,663,561.94
5. Step 5: Solve for x
   x = 2,663,561.94/1,779.63
6. Step 6: Final answer
   x = 1,496.69