Finding the Fourth Proportional to 1,360.69, 1,875.12 and 917.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.69 : 1,875.12 = 917.83 : x
2. Step 2: Convert to fraction form
   1,360.69/1,875.12 = 917.83/x
3. Step 3: Cross multiply
   1,360.69x = 1,875.12 × 917.83
4. Step 4: Simplify right side
   1,360.69x = 1,721,036.63
5. Step 5: Solve for x
   x = 1,721,036.63/1,360.69
6. Step 6: Final answer
   x = 1,264.82