Finding the Fourth Proportional to 1,429.34, 1,971.54 and 1,242.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.34 : 1,971.54 = 1,242.50 : x
2. Step 2: Convert to fraction form
   1,429.34/1,971.54 = 1,242.50/x
3. Step 3: Cross multiply
   1,429.34x = 1,971.54 × 1,242.50
4. Step 4: Simplify right side
   1,429.34x = 2,449,628.59
5. Step 5: Solve for x
   x = 2,449,628.59/1,429.34
6. Step 6: Final answer
   x = 1,713.82