Finding the Fourth Proportional to 1,570.83, 2,168.01 and 907.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,570.83 : 2,168.01 = 907.56 : x
2. Step 2: Convert to fraction form
   1,570.83/2,168.01 = 907.56/x
3. Step 3: Cross multiply
   1,570.83x = 2,168.01 × 907.56
4. Step 4: Simplify right side
   1,570.83x = 1,967,599.16
5. Step 5: Solve for x
   x = 1,967,599.16/1,570.83
6. Step 6: Final answer
   x = 1,252.59