Finding the Fourth Proportional to 1,437.32, 1,983.50 and 840.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.32 : 1,983.50 = 840.23 : x
2. Step 2: Convert to fraction form
   1,437.32/1,983.50 = 840.23/x
3. Step 3: Cross multiply
   1,437.32x = 1,983.50 × 840.23
4. Step 4: Simplify right side
   1,437.32x = 1,666,588.39
5. Step 5: Solve for x
   x = 1,666,588.39/1,437.32
6. Step 6: Final answer
   x = 1,159.51