Finding the Fourth Proportional to 1,691.19, 2,333.58 and 945.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,691.19 : 2,333.58 = 945.12 : x
2. Step 2: Convert to fraction form
   1,691.19/2,333.58 = 945.12/x
3. Step 3: Cross multiply
   1,691.19x = 2,333.58 × 945.12
4. Step 4: Simplify right side
   1,691.19x = 2,205,513.13
5. Step 5: Solve for x
   x = 2,205,513.13/1,691.19
6. Step 6: Final answer
   x = 1,304.12