Finding the Fourth Proportional to 1,813.02, 2,502.18 and 1,392.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,813.02 : 2,502.18 = 1,392.63 : x
2. Step 2: Convert to fraction form
   1,813.02/2,502.18 = 1,392.63/x
3. Step 3: Cross multiply
   1,813.02x = 2,502.18 × 1,392.63
4. Step 4: Simplify right side
   1,813.02x = 3,484,610.93
5. Step 5: Solve for x
   x = 3,484,610.93/1,813.02
6. Step 6: Final answer
   x = 1,921.99