Finding the Fourth Proportional to 953,991.19, 1,431,642.89 and 393,025.69

Step by Step Solution

1. Step 1: Write the proportion equation
   953,991.19 : 1,431,642.89 = 393,025.69 : x
2. Step 2: Convert to fraction form
   953,991.19/1,431,642.89 = 393,025.69/x
3. Step 3: Cross multiply
   953,991.19x = 1,431,642.89 × 393,025.69
4. Step 4: Simplify right side
   953,991.19x = 562,672,429,131.61
5. Step 5: Solve for x
   x = 562,672,429,131.61/953,991.19
6. Step 6: Final answer
   x = 589,808.83