Finding the Fourth Proportional to 1,669.46, 2,302.94 and 1,355.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,669.46 : 2,302.94 = 1,355.08 : x
2. Step 2: Convert to fraction form
   1,669.46/2,302.94 = 1,355.08/x
3. Step 3: Cross multiply
   1,669.46x = 2,302.94 × 1,355.08
4. Step 4: Simplify right side
   1,669.46x = 3,120,667.94
5. Step 5: Solve for x
   x = 3,120,667.94/1,669.46
6. Step 6: Final answer
   x = 1,869.27