Finding the Fourth Proportional to 1,764.59, 2,647.58 and 790.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,764.59 : 2,647.58 = 790.47 : x
2. Step 2: Convert to fraction form
   1,764.59/2,647.58 = 790.47/x
3. Step 3: Cross multiply
   1,764.59x = 2,647.58 × 790.47
4. Step 4: Simplify right side
   1,764.59x = 2,092,828.61
5. Step 5: Solve for x
   x = 2,092,828.61/1,764.59
6. Step 6: Final answer
   x = 1,186.02