Finding the Fourth Proportional to 1,492.84, 2,236.56 and 1,405

Step by Step Solution

1. Step 1: Write the proportion equation
   1,492.84 : 2,236.56 = 1,405 : x
2. Step 2: Convert to fraction form
   1,492.84/2,236.56 = 1,405/x
3. Step 3: Cross multiply
   1,492.84x = 2,236.56 × 1,405
4. Step 4: Simplify right side
   1,492.84x = 3,142,366.80
5. Step 5: Solve for x
   x = 3,142,366.80/1,492.84
6. Step 6: Final answer
   x = 2,104.96