Finding the Fourth Proportional to 1,406.00, 1,940.02 and 987.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.00 : 1,940.02 = 987.63 : x
2. Step 2: Convert to fraction form
   1,406.00/1,940.02 = 987.63/x
3. Step 3: Cross multiply
   1,406.00x = 1,940.02 × 987.63
4. Step 4: Simplify right side
   1,406.00x = 1,916,009.78
5. Step 5: Solve for x
   x = 1,916,009.78/1,406.00
6. Step 6: Final answer
   x = 1,362.74