Finding the Fourth Proportional to 1,606.16, 2,216.52 and 907.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,606.16 : 2,216.52 = 907.52 : x
2. Step 2: Convert to fraction form
   1,606.16/2,216.52 = 907.52/x
3. Step 3: Cross multiply
   1,606.16x = 2,216.52 × 907.52
4. Step 4: Simplify right side
   1,606.16x = 2,011,536.23
5. Step 5: Solve for x
   x = 2,011,536.23/1,606.16
6. Step 6: Final answer
   x = 1,252.39