Finding the Fourth Proportional to 1,152.54, 1,721.00 and 906.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.54 : 1,721.00 = 906.30 : x
2. Step 2: Convert to fraction form
   1,152.54/1,721.00 = 906.30/x
3. Step 3: Cross multiply
   1,152.54x = 1,721.00 × 906.30
4. Step 4: Simplify right side
   1,152.54x = 1,559,737.77
5. Step 5: Solve for x
   x = 1,559,737.77/1,152.54
6. Step 6: Final answer
   x = 1,353.30