Finding the Fourth Proportional to 2,357.79, 3,253.89 and 1,309.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,357.79 : 3,253.89 = 1,309.84 : x
2. Step 2: Convert to fraction form
   2,357.79/3,253.89 = 1,309.84/x
3. Step 3: Cross multiply
   2,357.79x = 3,253.89 × 1,309.84
4. Step 4: Simplify right side
   2,357.79x = 4,262,075.28
5. Step 5: Solve for x
   x = 4,262,075.28/2,357.79
6. Step 6: Final answer
   x = 1,807.66