Finding the Fourth Proportional to 1,386.42, 1,913.58 and 944.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386.42 : 1,913.58 = 944.50 : x
2. Step 2: Convert to fraction form
   1,386.42/1,913.58 = 944.50/x
3. Step 3: Cross multiply
   1,386.42x = 1,913.58 × 944.50
4. Step 4: Simplify right side
   1,386.42x = 1,807,376.31
5. Step 5: Solve for x
   x = 1,807,376.31/1,386.42
6. Step 6: Final answer
   x = 1,303.63