Finding the Fourth Proportional to 1,354.65, 1,869.32 and 913.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.65 : 1,869.32 = 913.15 : x
2. Step 2: Convert to fraction form
   1,354.65/1,869.32 = 913.15/x
3. Step 3: Cross multiply
   1,354.65x = 1,869.32 × 913.15
4. Step 4: Simplify right side
   1,354.65x = 1,706,962.50
5. Step 5: Solve for x
   x = 1,706,962.50/1,354.65
6. Step 6: Final answer
   x = 1,260.08