Finding the Fourth Proportional to 1,071.54, 1,477.98 and 651.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.54 : 1,477.98 = 651.60 : x
2. Step 2: Convert to fraction form
   1,071.54/1,477.98 = 651.60/x
3. Step 3: Cross multiply
   1,071.54x = 1,477.98 × 651.60
4. Step 4: Simplify right side
   1,071.54x = 963,051.77
5. Step 5: Solve for x
   x = 963,051.77/1,071.54
6. Step 6: Final answer
   x = 898.75