Finding the Fourth Proportional to 1,061.43, 1,590.06 and 906.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.43 : 1,590.06 = 906.51 : x
2. Step 2: Convert to fraction form
   1,061.43/1,590.06 = 906.51/x
3. Step 3: Cross multiply
   1,061.43x = 1,590.06 × 906.51
4. Step 4: Simplify right side
   1,061.43x = 1,441,405.29
5. Step 5: Solve for x
   x = 1,441,405.29/1,061.43
6. Step 6: Final answer
   x = 1,357.98