Finding the Fourth Proportional to 1,053.59, 1,453.32 and 659.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.59 : 1,453.32 = 659.93 : x
2. Step 2: Convert to fraction form
   1,053.59/1,453.32 = 659.93/x
3. Step 3: Cross multiply
   1,053.59x = 1,453.32 × 659.93
4. Step 4: Simplify right side
   1,053.59x = 959,089.47
5. Step 5: Solve for x
   x = 959,089.47/1,053.59
6. Step 6: Final answer
   x = 910.31