Finding the Fourth Proportional to 1,376.72, 1,898.66 and 904.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,376.72 : 1,898.66 = 904.48 : x
2. Step 2: Convert to fraction form
   1,376.72/1,898.66 = 904.48/x
3. Step 3: Cross multiply
   1,376.72x = 1,898.66 × 904.48
4. Step 4: Simplify right side
   1,376.72x = 1,717,300.00
5. Step 5: Solve for x
   x = 1,717,300.00/1,376.72
6. Step 6: Final answer
   x = 1,247.39