Finding the Fourth Proportional to 1,402.56, 2,101.92 and 988.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.56 : 2,101.92 = 988.34 : x
2. Step 2: Convert to fraction form
   1,402.56/2,101.92 = 988.34/x
3. Step 3: Cross multiply
   1,402.56x = 2,101.92 × 988.34
4. Step 4: Simplify right side
   1,402.56x = 2,077,401.10
5. Step 5: Solve for x
   x = 2,077,401.10/1,402.56
6. Step 6: Final answer
   x = 1,481.15