Finding the Fourth Proportional to 1,580.06, 2,180.79 and 951.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,580.06 : 2,180.79 = 951.10 : x
2. Step 2: Convert to fraction form
   1,580.06/2,180.79 = 951.10/x
3. Step 3: Cross multiply
   1,580.06x = 2,180.79 × 951.10
4. Step 4: Simplify right side
   1,580.06x = 2,074,149.37
5. Step 5: Solve for x
   x = 2,074,149.37/1,580.06
6. Step 6: Final answer
   x = 1,312.70