Finding the Fourth Proportional to 1,116,426.51, 1,540,670.22 and 607,128.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116,426.51 : 1,540,670.22 = 607,128.75 : x
2. Step 2: Convert to fraction form
   1,116,426.51/1,540,670.22 = 607,128.75/x
3. Step 3: Cross multiply
   1,116,426.51x = 1,540,670.22 × 607,128.75
4. Step 4: Simplify right side
   1,116,426.51x = 935,385,184,830.83
5. Step 5: Solve for x
   x = 935,385,184,830.83/1,116,426.51
6. Step 6: Final answer
   x = 837,838.56