Finding the Fourth Proportional to 1,200.86, 1,799.60 and 904.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.86 : 1,799.60 = 904.18 : x
2. Step 2: Convert to fraction form
   1,200.86/1,799.60 = 904.18/x
3. Step 3: Cross multiply
   1,200.86x = 1,799.60 × 904.18
4. Step 4: Simplify right side
   1,200.86x = 1,627,162.33
5. Step 5: Solve for x
   x = 1,627,162.33/1,200.86
6. Step 6: Final answer
   x = 1,355.00