Finding the Fourth Proportional to 1,759.54, 2,638.59 and 784.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,759.54 : 2,638.59 = 784.98 : x
2. Step 2: Convert to fraction form
   1,759.54/2,638.59 = 784.98/x
3. Step 3: Cross multiply
   1,759.54x = 2,638.59 × 784.98
4. Step 4: Simplify right side
   1,759.54x = 2,071,240.38
5. Step 5: Solve for x
   x = 2,071,240.38/1,759.54
6. Step 6: Final answer
   x = 1,177.15