Finding the Fourth Proportional to 1,359.76, 1,875.36 and 835.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.76 : 1,875.36 = 835.60 : x
2. Step 2: Convert to fraction form
   1,359.76/1,875.36 = 835.60/x
3. Step 3: Cross multiply
   1,359.76x = 1,875.36 × 835.60
4. Step 4: Simplify right side
   1,359.76x = 1,567,050.82
5. Step 5: Solve for x
   x = 1,567,050.82/1,359.76
6. Step 6: Final answer
   x = 1,152.45