Finding the Fourth Proportional to 1,377.51, 2,064.25 and 790.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.51 : 2,064.25 = 790.71 : x
2. Step 2: Convert to fraction form
   1,377.51/2,064.25 = 790.71/x
3. Step 3: Cross multiply
   1,377.51x = 2,064.25 × 790.71
4. Step 4: Simplify right side
   1,377.51x = 1,632,223.12
5. Step 5: Solve for x
   x = 1,632,223.12/1,377.51
6. Step 6: Final answer
   x = 1,184.91