Finding the Fourth Proportional to 1,670.21, 2,304.89 and 914.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,670.21 : 2,304.89 = 914.00 : x
2. Step 2: Convert to fraction form
   1,670.21/2,304.89 = 914.00/x
3. Step 3: Cross multiply
   1,670.21x = 2,304.89 × 914.00
4. Step 4: Simplify right side
   1,670.21x = 2,106,653.37
5. Step 5: Solve for x
   x = 2,106,653.37/1,670.21
6. Step 6: Final answer
   x = 1,261.31