Finding the Fourth Proportional to 1,580.68, 2,181.81 and 951.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,580.68 : 2,181.81 = 951.42 : x
2. Step 2: Convert to fraction form
   1,580.68/2,181.81 = 951.42/x
3. Step 3: Cross multiply
   1,580.68x = 2,181.81 × 951.42
4. Step 4: Simplify right side
   1,580.68x = 2,075,817.67
5. Step 5: Solve for x
   x = 2,075,817.67/1,580.68
6. Step 6: Final answer
   x = 1,313.24