Finding the Fourth Proportional to 2,345.86, 3,236.79 and 1,401.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.86 : 3,236.79 = 1,401.40 : x
2. Step 2: Convert to fraction form
   2,345.86/3,236.79 = 1,401.40/x
3. Step 3: Cross multiply
   2,345.86x = 3,236.79 × 1,401.40
4. Step 4: Simplify right side
   2,345.86x = 4,536,037.51
5. Step 5: Solve for x
   x = 4,536,037.51/2,345.86
6. Step 6: Final answer
   x = 1,933.64