Finding the Fourth Proportional to 1,570.89, 2,167.46 and 907.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,570.89 : 2,167.46 = 907.62 : x
2. Step 2: Convert to fraction form
   1,570.89/2,167.46 = 907.62/x
3. Step 3: Cross multiply
   1,570.89x = 2,167.46 × 907.62
4. Step 4: Simplify right side
   1,570.89x = 1,967,230.05
5. Step 5: Solve for x
   x = 1,967,230.05/1,570.89
6. Step 6: Final answer
   x = 1,252.30