Finding the Fourth Proportional to 1,402.94, 1,935.15 and 1,355.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.94 : 1,935.15 = 1,355.42 : x
2. Step 2: Convert to fraction form
   1,402.94/1,935.15 = 1,355.42/x
3. Step 3: Cross multiply
   1,402.94x = 1,935.15 × 1,355.42
4. Step 4: Simplify right side
   1,402.94x = 2,622,941.01
5. Step 5: Solve for x
   x = 2,622,941.01/1,402.94
6. Step 6: Final answer
   x = 1,869.60