Finding the Fourth Proportional to 1,429.58, 1,973.00 and 840.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.58 : 1,973.00 = 840.17 : x
2. Step 2: Convert to fraction form
   1,429.58/1,973.00 = 840.17/x
3. Step 3: Cross multiply
   1,429.58x = 1,973.00 × 840.17
4. Step 4: Simplify right side
   1,429.58x = 1,657,651.21
5. Step 5: Solve for x
   x = 1,657,651.21/1,429.58
6. Step 6: Final answer
   x = 1,159.54