Finding the Fourth Proportional to 1,364.96, 1,883.52 and 840.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,364.96 : 1,883.52 = 840.88 : x
2. Step 2: Convert to fraction form
   1,364.96/1,883.52 = 840.88/x
3. Step 3: Cross multiply
   1,364.96x = 1,883.52 × 840.88
4. Step 4: Simplify right side
   1,364.96x = 1,583,814.30
5. Step 5: Solve for x
   x = 1,583,814.30/1,364.96
6. Step 6: Final answer
   x = 1,160.34