Finding the Fourth Proportional to 1,570.70, 2,167.52 and 907.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,570.70 : 2,167.52 = 907.54 : x
2. Step 2: Convert to fraction form
   1,570.70/2,167.52 = 907.54/x
3. Step 3: Cross multiply
   1,570.70x = 2,167.52 × 907.54
4. Step 4: Simplify right side
   1,570.70x = 1,967,111.10
5. Step 5: Solve for x
   x = 1,967,111.10/1,570.70
6. Step 6: Final answer
   x = 1,252.38