Finding the Fourth Proportional to 1,192.71, 1,788.89 and 534.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,192.71 : 1,788.89 = 534.45 : x
2. Step 2: Convert to fraction form
   1,192.71/1,788.89 = 534.45/x
3. Step 3: Cross multiply
   1,192.71x = 1,788.89 × 534.45
4. Step 4: Simplify right side
   1,192.71x = 956,069.59
5. Step 5: Solve for x
   x = 956,069.59/1,192.71
6. Step 6: Final answer
   x = 801.59