Finding the Fourth Proportional to 1,113.39, 1,669.86 and 383.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,113.39 : 1,669.86 = 383.00 : x
2. Step 2: Convert to fraction form
   1,113.39/1,669.86 = 383.00/x
3. Step 3: Cross multiply
   1,113.39x = 1,669.86 × 383.00
4. Step 4: Simplify right side
   1,113.39x = 639,548.03
5. Step 5: Solve for x
   x = 639,548.03/1,113.39
6. Step 6: Final answer
   x = 574.42