Finding the Fourth Proportional to 1,152,863.99, 1,590,831.39 and 669,334.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152,863.99 : 1,590,831.39 = 669,334.69 : x
2. Step 2: Convert to fraction form
   1,152,863.99/1,590,831.39 = 669,334.69/x
3. Step 3: Cross multiply
   1,152,863.99x = 1,590,831.39 × 669,334.69
4. Step 4: Simplify right side
   1,152,863.99x = 1,064,798,639,766.46
5. Step 5: Solve for x
   x = 1,064,798,639,766.46/1,152,863.99
6. Step 6: Final answer
   x = 923,611.68