Finding the Fourth Proportional to 1,359.56, 1,875.78 and 835.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.56 : 1,875.78 = 835.40 : x
2. Step 2: Convert to fraction form
   1,359.56/1,875.78 = 835.40/x
3. Step 3: Cross multiply
   1,359.56x = 1,875.78 × 835.40
4. Step 4: Simplify right side
   1,359.56x = 1,567,026.61
5. Step 5: Solve for x
   x = 1,567,026.61/1,359.56
6. Step 6: Final answer
   x = 1,152.60