Finding the Fourth Proportional to 2,402.91, 3,315.96 and 1,355.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.91 : 3,315.96 = 1,355.00 : x
2. Step 2: Convert to fraction form
   2,402.91/3,315.96 = 1,355.00/x
3. Step 3: Cross multiply
   2,402.91x = 3,315.96 × 1,355.00
4. Step 4: Simplify right side
   2,402.91x = 4,493,109.22
5. Step 5: Solve for x
   x = 4,493,109.22/2,402.91
6. Step 6: Final answer
   x = 1,869.86