Finding the Fourth Proportional to 2,145.84, 3,218.16 and 1,364.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.84 : 3,218.16 = 1,364.72 : x
2. Step 2: Convert to fraction form
   2,145.84/3,218.16 = 1,364.72/x
3. Step 3: Cross multiply
   2,145.84x = 3,218.16 × 1,364.72
4. Step 4: Simplify right side
   2,145.84x = 4,391,887.32
5. Step 5: Solve for x
   x = 4,391,887.32/2,145.84
6. Step 6: Final answer
   x = 2,046.70