Finding the Fourth Proportional to 1,314.82, 1,971.72 and 904.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,314.82 : 1,971.72 = 904.07 : x
2. Step 2: Convert to fraction form
   1,314.82/1,971.72 = 904.07/x
3. Step 3: Cross multiply
   1,314.82x = 1,971.72 × 904.07
4. Step 4: Simplify right side
   1,314.82x = 1,782,578.06
5. Step 5: Solve for x
   x = 1,782,578.06/1,314.82
6. Step 6: Final answer
   x = 1,355.76