Finding the Fourth Proportional to 1,401.94, 2,103.32 and 580.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.94 : 2,103.32 = 580.06 : x
2. Step 2: Convert to fraction form
   1,401.94/2,103.32 = 580.06/x
3. Step 3: Cross multiply
   1,401.94x = 2,103.32 × 580.06
4. Step 4: Simplify right side
   1,401.94x = 1,220,051.80
5. Step 5: Solve for x
   x = 1,220,051.80/1,401.94
6. Step 6: Final answer
   x = 870.26