Finding the Fourth Proportional to 1,400.15, 1,932.06 and 840.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.15 : 1,932.06 = 840.51 : x
2. Step 2: Convert to fraction form
   1,400.15/1,932.06 = 840.51/x
3. Step 3: Cross multiply
   1,400.15x = 1,932.06 × 840.51
4. Step 4: Simplify right side
   1,400.15x = 1,623,915.75
5. Step 5: Solve for x
   x = 1,623,915.75/1,400.15
6. Step 6: Final answer
   x = 1,159.82