Finding the Fourth Proportional to 1,535.94, 2,300.85 and 917.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,535.94 : 2,300.85 = 917.91 : x
2. Step 2: Convert to fraction form
   1,535.94/2,300.85 = 917.91/x
3. Step 3: Cross multiply
   1,535.94x = 2,300.85 × 917.91
4. Step 4: Simplify right side
   1,535.94x = 2,111,973.22
5. Step 5: Solve for x
   x = 2,111,973.22/1,535.94
6. Step 6: Final answer
   x = 1,375.04