Finding the Fourth Proportional to 1,431.37, 1,985.32 and 1,373.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431.37 : 1,985.32 = 1,373.05 : x
2. Step 2: Convert to fraction form
   1,431.37/1,985.32 = 1,373.05/x
3. Step 3: Cross multiply
   1,431.37x = 1,985.32 × 1,373.05
4. Step 4: Simplify right side
   1,431.37x = 2,725,943.63
5. Step 5: Solve for x
   x = 2,725,943.63/1,431.37
6. Step 6: Final answer
   x = 1,904.43